1. Gravitation is the force of attraction between two objects due to their masses. The universal law of gravitation states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
2. When an object falls towards the earth due to gravitational attraction, it is undergoing free fall. The acceleration during free fall is called acceleration due to gravity (g), which is about 9.8 m/s^2 on earth.
3. Archimedes' principle states that when an object is immersed in a fluid, it experiences an upward buoyant force equal to the weight of the fluid displaced by the object. This determines whether
The document discusses concepts related to gravitation including Newton's universal law of gravitation, Kepler's laws of planetary motion, acceleration due to gravity, and equations of vertical motion. Some key points covered include:
1) Newton's universal law of gravitation states that the gravitational force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
2) Kepler's laws describe the motion of planets and include that planets move in elliptical orbits with the sun at one focus.
3) Acceleration due to gravity on Earth is approximately 9.8 m/s2 and causes objects to experience weight. Weight depends on both mass and location.
This document provides definitions and explanations of key concepts related to motion including:
1. Motion is defined as a change in an object's position over time, while rest is defined as no change in position over time. Motion and rest are relative terms depending on the frame of reference.
2. Displacement is the straight-line distance between an object's initial and final positions including direction, while distance is the total path length traveled by an object regardless of direction.
3. Speed is the rate of change of distance over time and is a scalar quantity, while velocity is the rate of change of displacement over time and is a vector quantity that includes direction.
This document provides definitions and explanations of key concepts related to work, energy, and power:
1) Work is done when a force causes an object to be displaced in the direction of the force. Work is measured in joules, which is the work done by a force of 1 newton over a displacement of 1 meter.
2) Energy is the ability of an object to do work and is also measured in joules. There are different forms of energy including kinetic, potential, chemical, and mechanical energy.
3) Kinetic energy is the energy an object possesses due to its motion and depends on the object's mass and speed. Potential energy is the stored energy an object possesses due to its position
class 9 chapter 11 work and energy very helpful presentationStainich Shivansh
This document provides an overview of work, energy, and power. It defines work as force multiplied by displacement and defines the joule as the unit of work. It describes kinetic energy as the energy of motion and potential energy as stored energy due to position or shape. It states that energy can change forms through transformation but the total amount remains constant according to the law of conservation of energy. Finally, it defines power as the rate of doing work and commercial units like the kilowatt hour.
1. Forces can change the motion of objects by moving stationary objects, changing the speed or direction of moving objects, or deforming objects. Balanced forces do not change motion while unbalanced forces do.
2. Friction opposes the motion of objects over a surface. Galileo's experiments with inclined planes showed that the motion of objects depends on the balance of forces.
3. Newton's laws of motion state that objects remain at rest or in uniform motion unless acted upon by an unbalanced force, the acceleration of an object depends on the net force acting on it and the object's mass, and for every action there is an equal and opposite reaction.
1. Gravitation is the force of attraction between two objects due to their masses. The universal law of gravitation states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
2. When an object falls towards the earth due to gravitational attraction, it is undergoing free fall. The acceleration during free fall is called acceleration due to gravity (g), which is about 9.8 m/s^2 on earth.
3. Archimedes' principle states that when an object is immersed in a fluid, it experiences an upward buoyant force equal to the weight of the fluid displaced by the object. This determines whether
The document discusses concepts related to gravitation including Newton's universal law of gravitation, Kepler's laws of planetary motion, acceleration due to gravity, and equations of vertical motion. Some key points covered include:
1) Newton's universal law of gravitation states that the gravitational force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
2) Kepler's laws describe the motion of planets and include that planets move in elliptical orbits with the sun at one focus.
3) Acceleration due to gravity on Earth is approximately 9.8 m/s2 and causes objects to experience weight. Weight depends on both mass and location.
This document provides definitions and explanations of key concepts related to motion including:
1. Motion is defined as a change in an object's position over time, while rest is defined as no change in position over time. Motion and rest are relative terms depending on the frame of reference.
2. Displacement is the straight-line distance between an object's initial and final positions including direction, while distance is the total path length traveled by an object regardless of direction.
3. Speed is the rate of change of distance over time and is a scalar quantity, while velocity is the rate of change of displacement over time and is a vector quantity that includes direction.
This document provides definitions and explanations of key concepts related to work, energy, and power:
1) Work is done when a force causes an object to be displaced in the direction of the force. Work is measured in joules, which is the work done by a force of 1 newton over a displacement of 1 meter.
2) Energy is the ability of an object to do work and is also measured in joules. There are different forms of energy including kinetic, potential, chemical, and mechanical energy.
3) Kinetic energy is the energy an object possesses due to its motion and depends on the object's mass and speed. Potential energy is the stored energy an object possesses due to its position
class 9 chapter 11 work and energy very helpful presentationStainich Shivansh
This document provides an overview of work, energy, and power. It defines work as force multiplied by displacement and defines the joule as the unit of work. It describes kinetic energy as the energy of motion and potential energy as stored energy due to position or shape. It states that energy can change forms through transformation but the total amount remains constant according to the law of conservation of energy. Finally, it defines power as the rate of doing work and commercial units like the kilowatt hour.
1. Forces can change the motion of objects by moving stationary objects, changing the speed or direction of moving objects, or deforming objects. Balanced forces do not change motion while unbalanced forces do.
2. Friction opposes the motion of objects over a surface. Galileo's experiments with inclined planes showed that the motion of objects depends on the balance of forces.
3. Newton's laws of motion state that objects remain at rest or in uniform motion unless acted upon by an unbalanced force, the acceleration of an object depends on the net force acting on it and the object's mass, and for every action there is an equal and opposite reaction.
1. The document discusses atoms, molecules, ions and chemical formulas. It explains concepts like atomic mass, molecular mass, valency and the mole concept.
2. Key points include Dalton's atomic theory, that atoms combine in small whole number ratios to form compounds, and that the mass of elements and compounds can be expressed in atomic mass units or grams.
3. Molecular mass is calculated by adding the atomic masses of each element in a molecule. A mole represents 6.022 x 1023 particles and can be used to relate mass, number of particles, and molar mass.
1. Work is done when a force causes an object to move in the direction of the force. Different types of work include positive work when force and motion are in the same direction and negative work when they are in opposite directions.
2. Energy exists in various forms and can be transferred from one object to another or changed from one form to another, but the total quantity of energy remains constant. Common forms include potential energy due to an object's position or shape and kinetic energy due to its motion.
3. The principle of conservation of energy states that the total energy in an isolated system remains constant over time. Energy can change form but cannot be created or destroyed. For example, when an object is lifted its
The document defines and provides examples of different types of motion including translational, rotational, and periodic motion. It discusses linear motion and distinguishes between uniform and non-uniform motion. Key physical quantities like displacement, speed, velocity, acceleration are defined. The three equations of motion relating these quantities are presented. Circular motion is also discussed.
This document discusses the classification and properties of pure substances and mixtures. It defines pure substances as elements or compounds that consist of a single type of matter, while mixtures contain two or more pure substances mixed together. Mixtures are classified as either homogeneous, containing substances mixed uniformly, or heterogeneous, containing visible particles that can be separated. The document also discusses various techniques for separating components of mixtures like evaporation, centrifugation, distillation and crystallization.
Parallax is the apparent change in position of an object when viewed from different positions. It can be used to measure distances to celestial objects. Stellar parallax involves measuring the difference in the position of a nearby star observed from opposite sides of Earth's orbit around the Sun. This allows astronomers to determine the star's distance using trigonometry. In 1989, the Hipparcos satellite improved parallax measurements for over 100,000 nearby stars. The Gaia satellite, launched in 2013, can measure parallax angles to greater accuracy, mapping stars up to tens of thousands of light years away.
1. The document describes motion and kinematic concepts like displacement, distance, speed, velocity, uniform and non-uniform motion, acceleration, and equations of motion.
2. Graphs of distance-time and velocity-time are used to represent motion and determine quantities like speed and acceleration from the slope of the graphs.
3. Circular motion is also described, where uniform circular motion involves constant speed but accelerated motion due to continuous change in direction.
This document provides information about the structure of the atom. It discusses the three main subatomic particles - electrons, protons, and neutrons. It describes the discoveries of these particles by scientists like Thomson, Goldstein, and Chadwick. The document then explains four major atomic models - Thomson's model, Rutherford's model, Bohr's model, and the distribution of electrons in shells. It also discusses concepts like atomic number, mass number, isotopes, isobars, and valency.
This document summarizes key concepts about gravitation and motion. It explains Newton's law of universal gravitation, which states that gravitational force between objects is directly proportional to their masses and inversely proportional to the square of the distance between them. It also defines gravitational acceleration as about 9.8 m/s2 near Earth's surface. Additionally, it discusses centripetal force, weight versus mass, buoyancy, pressure, and Kepler's laws of planetary motion.
The document describes various concepts related to motion including:
1) It defines motion, distance, displacement, uniform motion, non-uniform motion, speed, average speed, velocity, and average velocity.
2) It discusses acceleration, uniform acceleration, non-uniform acceleration, and the equations relating change in velocity to acceleration.
3) It explains how the motion of objects can be represented graphically using distance-time graphs and velocity-time graphs and how these graphs can be used to derive the equations of motion.
Motion in a Stright Line, Class 11th ,Chapter 1, PhysicsMayank Tiwari
This document discusses various concepts related to motion including types of motion, position, frame of reference, velocity, acceleration, scalar and vector quantities, and projectile motion. It defines key terms like rectilinear motion, circular motion, oscillatory motion, displacement, average velocity, instantaneous velocity, uniform acceleration, and horizontal range. Examples are provided to illustrate concepts like inertial and non-inertial frames of reference, displacement vector, and maximum height attained by a projectile.
1. Sound is produced by vibration and propagates as a longitudinal mechanical wave. It needs a medium like air, water or other material to travel through.
2. As the vibrating object moves back and forth, it alternately compresses and rarifies the surrounding medium, creating regions of high and low pressure called compressions and rarefactions. This disturbance propagates through the medium.
3. The characteristics of a sound wave include its frequency, wavelength, amplitude, pitch and loudness. Frequency determines pitch, with higher frequencies being higher pitched. Amplitude determines loudness, with larger amplitudes being louder.
This document provides an overview of matter and its properties. It discusses the following key points:
1) Matter is anything that occupies space and has mass. It can be classified based on physical state (solid, liquid, gas), chemical composition (pure substances and mixtures), and early Indian philosophies (five basic elements).
2) Matter is made up of very tiny particles that are in continuous motion, have space between them, and attract each other.
3) The three states of matter are solids, liquids, and gases, which differ in their properties like shape, volume, particle movement and attraction. Matter can change states through processes like melting, boiling, sublimation, and evaporation with the
Best PowerPoint presentation on NCERT class 9 Atoms and Molecules as per CBSE syllabus it covers full chapter with all information.
By Raxit Gupta
9C
KENDRIYA VIDYALAYA BALLYGUNGE
This document discusses Isaac Newton and Galileo's contributions to the laws of motion and forces. It provides definitions and examples for key concepts like force, balanced and unbalanced forces, inertia, momentum, and Newton's three laws of motion. Newton's first law states that an object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force. The second law establishes that acceleration is produced when a force acts and is directly proportional to the net force and inversely proportional to the mass. Newton's third law states that for every action there is an equal and opposite reaction.
This document describes various concepts related to motion including:
1) Motion is defined as a change in position of an object over time, and can be described by distance or displacement.
2) Uniform and non-uniform motion are defined based on whether distances traveled are equal or unequal over equal time intervals.
3) Speed, velocity, average speed, average velocity, acceleration, and circular motion are defined and the relationships between related concepts like displacement, time, speed, and velocity are described.
3) Formulas for acceleration, average speed, and the three equations of motion relating displacement, time, initial velocity, final velocity, and acceleration are derived.
The document discusses the universal law of gravitation. It states that every object in the universe attracts other objects by a gravitational force that is directly proportional to the product of the masses and inversely proportional to the square of the distance between them. It also explains that the gravitational force causes all objects to accelerate at the same rate when in free fall near the Earth's surface, known as the acceleration due to gravity. Additionally, it defines mass and weight, noting that weight is proportional to mass and is the force of gravitational attraction.
This document provides a summary of key concepts about atoms and molecules:
1) It defines atoms as the smallest particle of an element that retains chemical properties, and molecules as a group of atoms held together.
2) It explains Dalton's atomic theory, including that atoms combine in small whole number ratios to form compounds.
3) It discusses the symbols and masses of atoms, atomicity and valency, writing chemical formulas, and calculating molecular mass.
4) It introduces the mole concept relating the number of particles, mass, and molar mass.
1. Forces can change the motion of objects by moving stationary objects, changing the speed or direction of moving objects, or deforming objects. Balanced forces do not change motion while unbalanced forces do.
2. Galileo's experiment on inclined planes showed that an object's speed increases going down a plane and decreases going up, demonstrating the effects of forces on motion.
3. Newton's second law states that applying a force to an object causes it to accelerate, and the greater the force or mass, the greater the acceleration. Newton's third law says that every action has an equal and opposite reaction.
1) There are four main types of forces - gravitational, electromagnetic, nuclear, and centripetal. Gravitational force acts between any two masses and depends on their masses and the distance between them.
2) Kepler's laws of planetary motion describe the motion of planets in the solar system. Newton's universal law of gravitation states that there is a gravitational attraction between any two masses that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
3) Gravitational acceleration (g) is the acceleration on an object due to gravity. On Earth, g is approximately 9.8 m/s2. The value of g depends on factors like the
1. Centripetal force is the force acting towards the center that causes acceleration and keeps an object moving in a circular path.
2. The universal law of gravitation states that every object in the universe attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.
3. Important concepts explained by the universal law include the force binding us to Earth, the motion of the moon around Earth, and the motion of planets around the sun.
1. The document discusses atoms, molecules, ions and chemical formulas. It explains concepts like atomic mass, molecular mass, valency and the mole concept.
2. Key points include Dalton's atomic theory, that atoms combine in small whole number ratios to form compounds, and that the mass of elements and compounds can be expressed in atomic mass units or grams.
3. Molecular mass is calculated by adding the atomic masses of each element in a molecule. A mole represents 6.022 x 1023 particles and can be used to relate mass, number of particles, and molar mass.
1. Work is done when a force causes an object to move in the direction of the force. Different types of work include positive work when force and motion are in the same direction and negative work when they are in opposite directions.
2. Energy exists in various forms and can be transferred from one object to another or changed from one form to another, but the total quantity of energy remains constant. Common forms include potential energy due to an object's position or shape and kinetic energy due to its motion.
3. The principle of conservation of energy states that the total energy in an isolated system remains constant over time. Energy can change form but cannot be created or destroyed. For example, when an object is lifted its
The document defines and provides examples of different types of motion including translational, rotational, and periodic motion. It discusses linear motion and distinguishes between uniform and non-uniform motion. Key physical quantities like displacement, speed, velocity, acceleration are defined. The three equations of motion relating these quantities are presented. Circular motion is also discussed.
This document discusses the classification and properties of pure substances and mixtures. It defines pure substances as elements or compounds that consist of a single type of matter, while mixtures contain two or more pure substances mixed together. Mixtures are classified as either homogeneous, containing substances mixed uniformly, or heterogeneous, containing visible particles that can be separated. The document also discusses various techniques for separating components of mixtures like evaporation, centrifugation, distillation and crystallization.
Parallax is the apparent change in position of an object when viewed from different positions. It can be used to measure distances to celestial objects. Stellar parallax involves measuring the difference in the position of a nearby star observed from opposite sides of Earth's orbit around the Sun. This allows astronomers to determine the star's distance using trigonometry. In 1989, the Hipparcos satellite improved parallax measurements for over 100,000 nearby stars. The Gaia satellite, launched in 2013, can measure parallax angles to greater accuracy, mapping stars up to tens of thousands of light years away.
1. The document describes motion and kinematic concepts like displacement, distance, speed, velocity, uniform and non-uniform motion, acceleration, and equations of motion.
2. Graphs of distance-time and velocity-time are used to represent motion and determine quantities like speed and acceleration from the slope of the graphs.
3. Circular motion is also described, where uniform circular motion involves constant speed but accelerated motion due to continuous change in direction.
This document provides information about the structure of the atom. It discusses the three main subatomic particles - electrons, protons, and neutrons. It describes the discoveries of these particles by scientists like Thomson, Goldstein, and Chadwick. The document then explains four major atomic models - Thomson's model, Rutherford's model, Bohr's model, and the distribution of electrons in shells. It also discusses concepts like atomic number, mass number, isotopes, isobars, and valency.
This document summarizes key concepts about gravitation and motion. It explains Newton's law of universal gravitation, which states that gravitational force between objects is directly proportional to their masses and inversely proportional to the square of the distance between them. It also defines gravitational acceleration as about 9.8 m/s2 near Earth's surface. Additionally, it discusses centripetal force, weight versus mass, buoyancy, pressure, and Kepler's laws of planetary motion.
The document describes various concepts related to motion including:
1) It defines motion, distance, displacement, uniform motion, non-uniform motion, speed, average speed, velocity, and average velocity.
2) It discusses acceleration, uniform acceleration, non-uniform acceleration, and the equations relating change in velocity to acceleration.
3) It explains how the motion of objects can be represented graphically using distance-time graphs and velocity-time graphs and how these graphs can be used to derive the equations of motion.
Motion in a Stright Line, Class 11th ,Chapter 1, PhysicsMayank Tiwari
This document discusses various concepts related to motion including types of motion, position, frame of reference, velocity, acceleration, scalar and vector quantities, and projectile motion. It defines key terms like rectilinear motion, circular motion, oscillatory motion, displacement, average velocity, instantaneous velocity, uniform acceleration, and horizontal range. Examples are provided to illustrate concepts like inertial and non-inertial frames of reference, displacement vector, and maximum height attained by a projectile.
1. Sound is produced by vibration and propagates as a longitudinal mechanical wave. It needs a medium like air, water or other material to travel through.
2. As the vibrating object moves back and forth, it alternately compresses and rarifies the surrounding medium, creating regions of high and low pressure called compressions and rarefactions. This disturbance propagates through the medium.
3. The characteristics of a sound wave include its frequency, wavelength, amplitude, pitch and loudness. Frequency determines pitch, with higher frequencies being higher pitched. Amplitude determines loudness, with larger amplitudes being louder.
This document provides an overview of matter and its properties. It discusses the following key points:
1) Matter is anything that occupies space and has mass. It can be classified based on physical state (solid, liquid, gas), chemical composition (pure substances and mixtures), and early Indian philosophies (five basic elements).
2) Matter is made up of very tiny particles that are in continuous motion, have space between them, and attract each other.
3) The three states of matter are solids, liquids, and gases, which differ in their properties like shape, volume, particle movement and attraction. Matter can change states through processes like melting, boiling, sublimation, and evaporation with the
Best PowerPoint presentation on NCERT class 9 Atoms and Molecules as per CBSE syllabus it covers full chapter with all information.
By Raxit Gupta
9C
KENDRIYA VIDYALAYA BALLYGUNGE
This document discusses Isaac Newton and Galileo's contributions to the laws of motion and forces. It provides definitions and examples for key concepts like force, balanced and unbalanced forces, inertia, momentum, and Newton's three laws of motion. Newton's first law states that an object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force. The second law establishes that acceleration is produced when a force acts and is directly proportional to the net force and inversely proportional to the mass. Newton's third law states that for every action there is an equal and opposite reaction.
This document describes various concepts related to motion including:
1) Motion is defined as a change in position of an object over time, and can be described by distance or displacement.
2) Uniform and non-uniform motion are defined based on whether distances traveled are equal or unequal over equal time intervals.
3) Speed, velocity, average speed, average velocity, acceleration, and circular motion are defined and the relationships between related concepts like displacement, time, speed, and velocity are described.
3) Formulas for acceleration, average speed, and the three equations of motion relating displacement, time, initial velocity, final velocity, and acceleration are derived.
The document discusses the universal law of gravitation. It states that every object in the universe attracts other objects by a gravitational force that is directly proportional to the product of the masses and inversely proportional to the square of the distance between them. It also explains that the gravitational force causes all objects to accelerate at the same rate when in free fall near the Earth's surface, known as the acceleration due to gravity. Additionally, it defines mass and weight, noting that weight is proportional to mass and is the force of gravitational attraction.
This document provides a summary of key concepts about atoms and molecules:
1) It defines atoms as the smallest particle of an element that retains chemical properties, and molecules as a group of atoms held together.
2) It explains Dalton's atomic theory, including that atoms combine in small whole number ratios to form compounds.
3) It discusses the symbols and masses of atoms, atomicity and valency, writing chemical formulas, and calculating molecular mass.
4) It introduces the mole concept relating the number of particles, mass, and molar mass.
1. Forces can change the motion of objects by moving stationary objects, changing the speed or direction of moving objects, or deforming objects. Balanced forces do not change motion while unbalanced forces do.
2. Galileo's experiment on inclined planes showed that an object's speed increases going down a plane and decreases going up, demonstrating the effects of forces on motion.
3. Newton's second law states that applying a force to an object causes it to accelerate, and the greater the force or mass, the greater the acceleration. Newton's third law says that every action has an equal and opposite reaction.
1) There are four main types of forces - gravitational, electromagnetic, nuclear, and centripetal. Gravitational force acts between any two masses and depends on their masses and the distance between them.
2) Kepler's laws of planetary motion describe the motion of planets in the solar system. Newton's universal law of gravitation states that there is a gravitational attraction between any two masses that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
3) Gravitational acceleration (g) is the acceleration on an object due to gravity. On Earth, g is approximately 9.8 m/s2. The value of g depends on factors like the
1. Centripetal force is the force acting towards the center that causes acceleration and keeps an object moving in a circular path.
2. The universal law of gravitation states that every object in the universe attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.
3. Important concepts explained by the universal law include the force binding us to Earth, the motion of the moon around Earth, and the motion of planets around the sun.
Gravitation is a force that attracts two masses towards each other. Newton's Law of Universal Gravitation states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. Albert Einstein later developed the theory of gravitation further in his theories of relativity. On Earth, the acceleration due to gravity is approximately 9.8 m/s2, causing objects to fall towards the ground when dropped.
1. The document discusses key concepts of gravitation including Newton's universal law of gravitation, Kepler's laws of planetary motion, gravitational force, acceleration due to gravity, escape velocity, and free fall.
2. It explains that gravitational force is responsible for holding the atmosphere above the earth and for the motion of objects.
3. Newton's universal law of gravitation states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
The document discusses key concepts related to gravitation including:
1. Gravitation is an invisible force of attraction that causes objects to fall towards the Earth.
2. Isaac Newton formulated the Universal Law of Gravitation, which states that every object in the universe attracts other objects through a force proportional to the product of their masses and inversely proportional to the square of the distance between them.
3. Other concepts discussed include centripetal force, free fall, acceleration due to gravity, mass, weight, thrust, pressure, buoyancy, Archimedes' principle, density, and relative density. These concepts help explain motion, forces, and interactions between objects due to gravitation.
Gravitation, free fall, variation in 'g' and keplers law lecture wiseRohan Jain
This document contains lecture notes on gravitational force and Newton's law of universal gravitation. It discusses key topics including:
- Gravitational force is a fundamental force that attracts all objects with mass. Newton's law of gravitation describes the force as directly proportional to the product of the masses and inversely proportional to the square of the distance between them.
- Kepler's laws of planetary motion describe how planets move in elliptical orbits with the sun at one focus. Kepler's first law states orbits are ellipses, the second that planets sweep out equal areas in equal times, and the third relates orbital periods to orbital radii.
- The value of the gravitational acceleration g varies depending on location, altitude,
This document discusses the universal law of gravitation and its implications. It can be summarized as follows:
1) The universal law of gravitation states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
2) This law explains phenomena like the orbit of planets around the sun and the moon around Earth. It also explains why objects fall with an acceleration of 9.8 m/s^2 on Earth.
3) The weight of an object, which is the gravitational force exerted by Earth, differs on other celestial bodies due to differences in their masses and radii. Calculations show an object's weight on
The document discusses the concept of gravitation, including Newton's universal law of gravitation which states that every object in the universe attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between them. It also covers how gravitational force gives weight to objects on Earth, and how acceleration due to gravity (g) varies based on location and can be used to calculate motion under gravitational force. Examples are provided to demonstrate applications of these gravitational concepts.
Presentation on gravitation for class 9th Rahul Shukla
It contains a brief description of gravitation with a video.
This presentation is with a deginer font and a classic theme.
It also consist a beautiful song
This document discusses concepts related to gravitation and gravity. It begins with a brief history of gravity and Newton's law of gravitation. It then defines gravitation as the attractive force between any two objects with mass, and defines gravity as the gravitational force that occurs between Earth and other bodies. The key points are that gravitation is a universal force, while gravity specifically refers to the gravitational attraction of Earth. The document goes on to provide explanations and formulas for concepts like gravitational constant, acceleration due to gravity, mass vs weight, and center of gravity vs center of mass.
This document provides an overview of key concepts in gravitation including: the definition of gravitation; Newton's law of universal gravitation; acceleration due to gravity and how it varies with height and depth; escape velocity; orbital velocity; gravitational potential; time period of satellites; Kepler's laws of planetary motion; and types of satellites. Key points covered include how gravity decreases with height but increases with depth below the Earth's surface, and definitions of geostationary, polar, and binding energy as they relate to satellites orbiting the Earth.
1) Gravitation is the force of attraction between objects with mass. The universal law of gravitation states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
2) When an object moves in a circular path, it experiences a centripetal force towards the center of the circle that keeps it moving in the circle. Free fall is when an object falls due to gravitational attraction, experiencing an acceleration of 9.8 m/s^2.
3) Mass is a measure of an object's inertia and does not change in different locations. Weight is the gravitational force on an object, and varies by location depending on the
In physics, gravity (from Latin gravitas 'weight'[1]) is a fundamental interaction which causes mutual attraction between all things that have mass. Gravity is, by far, the weakest of the four fundamental interactions, approximately 1038 times weaker than the strong interaction, 1036 times weaker than the electromagnetic force and 1029 times weaker than the weak interaction. As a result, it has no significant influence at the level of subatomic particles.[2] However, gravity is the most significant interaction between objects at the macroscopic scale, and it determines the motion of planets, stars, galaxies, and even light.
On Earth, gravity gives weight to physical objects, and the Moon's gravity is responsible for sublunar tides in the oceans (the corresponding antipodal tide is caused by the inertia of the Earth and Moon orbiting one another). Gravity also has many important biological functions, helping to guide the growth of plants through the process of gravitropism and influencing the circulation of fluids in multicellular organisms.
The gravitational attraction between the original gaseous matter in the universe caused it to coalesce and form stars which eventually condensed into galaxies, so gravity is responsible for many of the large-scale structures in the universe. Gravity has an infinite range, although its effects become weaker as objects get farther away.
Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915), which describes gravity not as a force, but as the curvature of spacetime, caused by the uneven distribution of mass, and causing masses to move along geodesic lines. The most extreme example of this curvature of spacetime is a black hole, from which nothing—not even light—can escape once past the black hole's event horizon.[3] However, for most applications, gravity is well approximated by Newton's law of universal gravitation, which describes gravity as a force causing any two bodies to be attracted toward each other, with magnitude proportional to the product of their masses and inversely proportional to the square of the distance between them.
Current models of particle physics imply that the earliest instance of gravity in the universe, possibly in the form of quantum gravity, supergravity or a gravitational singularity, along with ordinary space and time, developed during the Planck epoch (up to 10−43 seconds after the birth of the universe), possibly from a primeval state, such as a false vacuum, quantum vacuum or virtual particle, in a currently unknown manner.[4] Scientists are currently working to develop a theory of gravity consistent with quantum mechanics, a quantum gravity theory,[5] which would allow gravity to be united in a common mathematical framework (a theory of everything) with the other three fundamental interactions of physics.
This document provides an introduction to the chapter on gravitation for class 9 students. It defines gravity and the universal law of gravitation. The law states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. It also discusses how gravitational force changes with varying mass and distance between objects. Kepler's laws of planetary motion are introduced, which were explained by Newton's universal law of gravitation. Examples are provided to demonstrate concepts like gravitational force and acceleration.
- Isaac Newton developed his law of universal gravitation in the late 17th century, stating that every particle in the universe attracts every other particle with a force directly proportional to their masses and inversely proportional to the square of the distance between them.
- Albert Einstein's theory of general relativity, published in 1915, revolutionized the understanding of gravity by describing it as the curvature of space-time caused by mass and energy, providing a new framework for how gravity behaves in extreme conditions.
- According to Einstein's theory, massive objects warp the fabric of space-time around them, creating what we perceive as gravity - objects with mass and energy tell space-time how to curve, and the curved space-time
Newton's law of universal gravitation states that every object in the universe attracts every other object by a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them. The acceleration due to gravity on Earth is approximately 9.8 m/s2. The moon revolves around the Earth due to the centripetal force of Earth's gravity. If this force ceased, the moon would travel in a straight line tangent to its orbit.
Newton's theory of universal gravitation proposes that every object in the universe attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between them. Newton realized that the moon and falling apples are attracted to Earth by the same force of gravity. He determined gravitational forces exist between all objects and derived the inverse-square law formula to calculate these forces. Examples of applying Newton's theory include calculating the masses of Earth and Sun from their gravitational interactions, and determining satellite speeds and orbital distances using formulas balancing gravitational and centrifugal forces.
1. The document discusses concepts related to gravitation including Newton's universal law of gravitation, Kepler's laws of planetary motion, acceleration due to gravity, mass, weight, thrust, pressure, and equations of vertical motion.
2. Key figures discussed include Johannes Kepler, Isaac Newton, and Archimedes. Newton developed the universal law of gravitation and Kepler described three empirical laws of planetary motion.
3. The universal law of gravitation states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
Physiology and chemistry of skin and pigmentation, hairs, scalp, lips and nail, Cleansing cream, Lotions, Face powders, Face packs, Lipsticks, Bath products, soaps and baby product,
Preparation and standardization of the following : Tonic, Bleaches, Dentifrices and Mouth washes & Tooth Pastes, Cosmetics for Nails.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
-------------------------------------------------------------------------------
Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
Webinars: https://pecb.com/webinars
Article: https://pecb.com/article
-------------------------------------------------------------------------------
For more information about PECB:
Website: https://pecb.com/
LinkedIn: https://www.linkedin.com/company/pecb/
Facebook: https://www.facebook.com/PECBInternational/
Slideshare: http://www.slideshare.net/PECBCERTIFICATION
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
Executive Directors Chat Leveraging AI for Diversity, Equity, and Inclusion
Class 9 chapter 10 Gravitation
1.
2. Gravitation is the force of
attraction between two
objects in the universe.
i) Gravitation may be the
attraction of objects by the
earth.
Eg :- If a body is dropped
from a certain height, it
falls downwards
due to earth’s gravity.
3. If a body is thrown upwards, it reaches a
certain height and then falls downwards due
to the earth’s gravity.
ii) Gravitation may be the attraction between
objects in outer space.
Eg :- Attraction between the earth and moon.
Attraction between the sun and planets.
4.
5. When a body moves in a circular path, it
changes its direction at every point. The
force which keeps the body in the circular
path acts towards the centre of the circle.
This force is called centripetal force.
If there is no centripetal force, the body will
move in a straight line tangent to the circular
path.
6.
7. The universal law of gravitation states that,
‘Every object in the universe attracts every
other object with a force which is directly
proportional to product of the masses
and inversely proportional to the square
of the distance between them’.
8.
9.
10.
11. The universal law of gravitation successfully
explained several phenomena which were
believed to be unconnected:
(i) the force that binds us to the earth;
(ii) the motion of the moon around the earth;
(iii) the motion of planets around the Sun;
and
(iv) the tides due to the moon and the Sun
12. The earth attracts objects towards it due to
gravitational force.
When an object falls towards the earth due
to the earth’s gravitational force it is called
free fall.
13. When an object falls towards the earth there is
a change in its acceleration
due to the gravitational force of the earth.
This acceleration is called acceleration due to
gravity or gravitational acceleration.
The acceleration due to gravity is denoted by g.
The unit of g is same as the unit of acceleration
ms -2
14.
15.
16. As the radius of the earth increases from the
poles to the equator, the value of g becomes
greater at the poles than at the equator.
As we go at large heights, value
of g decreases.
17. Value of universal gravitational constant, G =
6.7 × 10–11 N m2/ kg2,
Mass of the earth, M = 6 × 1024 kg, and
Radius of the earth, R = 6.4 × 106 m
Putting all these values in equation (iii), we get:
18. S.no. Gravitation Constant
(G)
Gravitational
acceleration (g)
1. Its value is 6.67×10-11
Nm2/kg2.
Its value is 9.8 m/s2 .
2. It is a scalar quantity. It is a vector quantity.
3. Its value remains
constant always and
everywhere.
Its value varies at
various places.
4. Its unit is Nm2/kg2. Its unit is m/s2
19. Let an object is falling towards earth with initial
velocity u. Let its velocity, under the effect of
gravitational acceleration g, changes to v after
covering the height h in time t.
Then the three equations of motion can be
represented as:
Velocity (v) after t seconds, v = u + ght
Height covered in t seconds, h = ut + ½gt2
Relation
between v and u excluding t, v2 = u2 + 2gh
20. The value of g is taken as positive in case of
the object is moving towards earth and
taken as negative in case of the object is
thrown in opposite direction of the earth.
21. The amount of matter in a body is call mass.
The mass of a body is the measure of its
inertia. If the mass of a body is more its
inertia is more.
The mass of a body is constant and does not
change from place to place.
The SI unit of mass is kg.
Mass of a body can never be zero .
22. The weight of a body is the force with which the
earth attracts the body.
The force with which a body is attracted by the
earth depends on its mass m and acceleration
due to gravity g.
F = m x g
Since weight of a body is the force with which
the earth attracts the body,
W = m x g
Since g at a place is constant , W α m
The weight of a body changes from place to
place.
The SI unit of weight is the same as force –
Newton (N).
23. Mass Weight
It is a scalar Quantity. It is vector Quantity.
The value of the mass
remains constant.
The value of weight varies
according to the position of
an object.
It is represented by “m”. It is represented by “W”.
Its SI unit is kg. Its SI Unit is Newton.
It is measured instruments
like beam balance.
It is measured instruments
like spring balance.
Its formula is: m = w/g Its formula is : W = mg
24. The weight of an object on the earth is the force
with which the earth attracts the object and the
weight of an object on the moon is the force
with which the moon attracts the object.
The mass of the moon is less than the mass of
the earth. So the moon exerts lesser force on
the objects than the earth.
Mass of an object is same on earth as well as
on moon. But weight is different.
28. Hence, weight of the object on the moon =
(1/6) × its weight on the earth.
We can calculate the ratio of weight of an
object on the surface of moon and on the
surface of earth by putting the values from
the following table in the steps below-