Upthrust
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Sacred Heart School student Sumer Sikri presents to Rohan Jain on upthrust and Archimedes. Upthrust is the upward force that objects experience when submerged in fluids, and depends on the object's surface area and shape. Archimedes discovered that upthrust equals the weight of the fluid displaced by the object. He developed Archimedes' principle, which explains that immersed objects experience an upward buoyant force equal to the weight of the fluid they displace.
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Force
Forces can move objects, change their direction of motion, change their shape, or stop them. There are different types of forces including magnetic force, gravitational force, and frictional force. Magnetic force pulls iron objects towards magnets. Gravitational force is caused by the Earth's pull and causes all objects to fall. Frictional force opposes motion between surfaces and can slow or stop moving objects.
Upthrust
Upthrust is a force that exists in liquids like water and pushes objects upward against gravity. It is why boats and other objects float, as the upthrust from the water balances out the downward force of gravity. The shape and size of an object affects how much upthrust it receives, with larger, flatter surfaces receiving more upthrust. This explains why people and objects are buoyant and float in water.
Momentum
Momentum is a quantity that expresses the motion of a body, equal to the product of its mass and velocity. The momentum of an object depends on its mass and velocity, with greater mass or velocity resulting in more momentum. The law of conservation of momentum states that in a closed system without external forces, the total momentum before and after an interaction will be the same. Examples include a person recoiling after firing a gun or moving backward when throwing an object off a skateboard. In collisions, the total momentum of the system is conserved and can be expressed mathematically as the sum of the momentum of the objects before equalling the sum after.
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upthrust.pptx
This document discusses upthrust, Archimedes' principle, and floatation. It defines upthrust as the upward force exerted on a body submerged in a fluid. According to Archimedes' principle, the upthrust on a body is equal to the weight of the fluid it displaces. The principle of floatation states that an object floats when the upthrust equals its weight, and sinks when the upthrust is less than its weight. Applications of these principles include why ships and nails float or sink, and the purpose of the Plimsoll line marked on ship hulls.
Mass & weight
Gravity is the force that attracts all objects to one another. It is weaker than most other fundamental forces and depends on the masses of objects and the distance between them. Weight is the measure of the gravitational force acting on an object and is calculated by multiplying the object's mass by the gravitational field strength of the location. While mass remains constant, weight can vary in different gravitational fields like on Earth, the Moon, or in deep space.
Heat & Temperature
The document discusses key concepts related to heat and temperature including hot and cold, volume, mass and density, heat and temperature, how adding heat impacts molecular motion and causes objects to expand or change state through evaporation or condensation, and how heat energy flows. It defines terms like volume, mass, density, heat, and temperature and explains that adding heat increases molecular motion which can overcome molecular forces and result in changes to objects.
Inertia
1) Inertia is the property of matter to resist changes in its motion.
2) According to Newton's first law of motion, called the law of inertia, an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an external force.
3) Inertia explains many phenomena we experience in daily life, such as passengers lurching forward when a bus brakes suddenly or a dog shaking itself after a bath to remove excess water due to its inertia.
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Forces can move objects, change their direction of motion, change their shape, or stop them. There are different types of forces including magnetic force, gravitational force, and frictional force. Magnetic force pulls iron objects towards magnets. Gravitational force is caused by the Earth's pull and causes all objects to fall. Frictional force opposes motion between surfaces and can slow or stop moving objects.
Upthrust
Upthrust is a force that exists in liquids like water and pushes objects upward against gravity. It is why boats and other objects float, as the upthrust from the water balances out the downward force of gravity. The shape and size of an object affects how much upthrust it receives, with larger, flatter surfaces receiving more upthrust. This explains why people and objects are buoyant and float in water.
Momentum
Momentum is a quantity that expresses the motion of a body, equal to the product of its mass and velocity. The momentum of an object depends on its mass and velocity, with greater mass or velocity resulting in more momentum. The law of conservation of momentum states that in a closed system without external forces, the total momentum before and after an interaction will be the same. Examples include a person recoiling after firing a gun or moving backward when throwing an object off a skateboard. In collisions, the total momentum of the system is conserved and can be expressed mathematically as the sum of the momentum of the objects before equalling the sum after.
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The document discusses key concepts related to motion including speed, velocity, acceleration, and frames of reference. It defines speed as distance traveled over time, velocity as including both speed and direction making it a vector quantity, and acceleration as how velocity changes over time either in magnitude or direction. Examples are provided to demonstrate calculating speed, velocity, and acceleration using formulas.
upthrust.pptx
This document discusses upthrust, Archimedes' principle, and floatation. It defines upthrust as the upward force exerted on a body submerged in a fluid. According to Archimedes' principle, the upthrust on a body is equal to the weight of the fluid it displaces. The principle of floatation states that an object floats when the upthrust equals its weight, and sinks when the upthrust is less than its weight. Applications of these principles include why ships and nails float or sink, and the purpose of the Plimsoll line marked on ship hulls.
Mass & weight
Gravity is the force that attracts all objects to one another. It is weaker than most other fundamental forces and depends on the masses of objects and the distance between them. Weight is the measure of the gravitational force acting on an object and is calculated by multiplying the object's mass by the gravitational field strength of the location. While mass remains constant, weight can vary in different gravitational fields like on Earth, the Moon, or in deep space.
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1) Inertia is the property of matter to resist changes in its motion.
2) According to Newton's first law of motion, called the law of inertia, an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an external force.
3) Inertia explains many phenomena we experience in daily life, such as passengers lurching forward when a bus brakes suddenly or a dog shaking itself after a bath to remove excess water due to its inertia.
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2) The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object (F=ma).
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Here are the answers to the questions on the paper:
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1) An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force (law of inertia).
2) The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object (F=ma).
3) For every action, there is an equal and opposite reaction.
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Archimedes was a pre-eminent Greek mathematician and inventor in the 3rd century BC. Archimedes' Principle states that when an object is fully or partially submerged in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. This principle explains why objects float or sink based on their density compared to the fluid. It also applies to balloons floating in air. The key concept is buoyant force, which reduces the apparent weight of an object submerged in a fluid by an amount equal to the weight of the fluid displaced.
Archimedes principle
Archimedes' principle states that when an object is fully or partially submerged in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. This principle explains why objects float or sink based on their density. If an object's density is greater than the fluid, it will sink, and if its density is less than the fluid, it will float. The upthrust force reduces the apparent weight of the submerged object. Applications of Archimedes' principle include determining ship drafts, submarine depths, and fluid densities using instruments like hydrometers.
archimedes-principle.ppt
Archimedes' principle states that when an object is fully or partially submerged in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. This principle explains why objects float or sink based on their density. If an object's density is greater than the fluid, it will sink, and if its density is less than the fluid, it will float. The upthrust force reduces the apparent weight felt by submerged objects. Archimedes' principle applies to ships, submarines, hot air balloons, and other objects interacting with fluids. It allows calculation of fluid density based on measurements of weight changes when objects are submerged.
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This document discusses Archimedes' principle of buoyancy. It explains that Archimedes' principle states that when an object is submerged in a fluid, it experiences an upward force equal to the weight of the fluid displaced. This upward force is called upthrust or buoyant force. The principle explains why objects float or sink based on an object's density compared to the fluid density. Applications of the principle include ships, submarines, hot air balloons, and hydrometers.
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This document discusses buoyancy and Archimedes' principle of physics. It explains that underwater, divers and marine animals experience an upward buoyant force nearly equal to their weight due to water pressure increasing with depth. Objects float if they have a density lower than water, as the buoyant force equals the weight of the displaced fluid. Icebergs also float due to having a density lower than water and occupying a large volume, with only a small portion of their mass above water as buoyancy counters their weight. Worked examples are included to demonstrate these principles.
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http://skillcruise.com/academics/mechanical-engineering/fluid-mechanics/
archimedes principle
Archimedes was a Greek scientist who discovered the principle of buoyancy, now known as Archimedes' Principle, after noticing that the water level rose when he got into a bath. His work in geometry, mechanics, and understanding of levers helped the Greek army defeat the Romans. Archimedes' Principle states that the buoyant force on an object immersed in a fluid is equal to the weight of the fluid displaced by the object. This principle is used in ship and submarine design and in instruments like lactometers and hydrometers that measure density. The formula for Archimedes' Principle relates the density of an object to the density of the fluid, allowing calculation of buoyant force without measuring volumes
ARCHIMEDES' PRINCIPLE
Archimedes was a Greek scientist who discovered the principle of buoyancy, now known as Archimedes' Principle, after noticing that the water level rose when he got into a bath. His work in geometry, mechanics, and understanding of levers helped the Greek army defeat the Romans. Archimedes' Principle states that the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object. This principle is used in ship and submarine design and in instruments like lactometers and hydrometers that measure fluid density.
ARCHIMEDES' PRINCIPLE
Archimedes was a Greek scientist who discovered the principle of buoyancy, now known as Archimedes' Principle, after noticing that he displaced water in a bath tub when he stepped inside. His work in geometry, mechanics, and understanding of levers helped the Greek army defeat the Romans. Archimedes' Principle states that the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object. This principle is used in ship and submarine design and in instruments like lactometers and hydrometers that measure density. The formula for Archimedes' Principle relates the density of an object to the density of the fluid, allowing calculation of buoyant force without measuring volumes.
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The document discusses Archimedes' principle, which states that the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object. It defines density and provides formulas for density, apparent loss in weight, and buoyant force. It then describes an experiment to verify Archimedes' principle by measuring the loss in weight of an object immersed in water, and comparing it to the weight of the displaced water. Finally, it discusses how the principle applies to ships, submarines, fish, and balloons floating or sinking based on their density relative to the surrounding fluid.
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Archimedes principle
Archimedes' principle states that the buoyant force on an object submerged or partially submerged in a fluid is equal to the weight of the fluid the object displaces. This principle can be used to calculate density and relative density. It also explains why ships and submarines float or sink depending on whether the object's density is greater than, equal to, or less than the fluid it is placed in. Applications of Archimedes' principle include ship building, submarine operations, and how certain aquatic animals and balloons are able to achieve buoyancy.
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The document discusses Archimedes' principle and its applications, including how it was discovered, what the principle states, and how it relates to concepts like buoyancy, relative density, and the operation of submarines. It also provides examples of using relative density to check the purity of substances by comparing their measured density to the theoretical density.
ROLE OF DENSITY IN SHIPS AND AIRCRAFT INDUSTRIES
The document discusses the importance of density in the ship and aircraft industries. It defines density and explains that an object's density determines if it will float or sink in water based on Archimedes' principle. Ships are able to float because they displace a volume of water with a mass less than the mass of the displaced water, creating an upward buoyant force. Aircraft carriers in particular float due to their large size distributing their weight across a wide area, balancing water pressure. In aviation, air density affects lift and engine performance, as lower density means lower aircraft performance.
Archimedes' principle
Archimedes was born in 287 BC in Syracuse, Greece. He died in 212 BC when he was killed by a Roman soldier who did not know his identity. Archimedes' father was named Phidias and may have been related to Hieron II, the king of Syracuse. Archimedes' Principle states that when a body is immersed partially or fully in a fluid, it experiences an upward force equal to the weight of the fluid displaced by the body. This upward force is called the buoyant force. The buoyant force depends on the volume of the body immersed and the density of the fluid. An experiment is described to verify Archimedes' Principle by measuring the loss in weight of a
Gravity biophysics
This document discusses key concepts related to gravity including:
1) Gravity is defined as the force that attracts objects towards the center of Earth or other celestial bodies. Newton's law of gravitation states that gravitational force is directly proportional to the product of masses and inversely proportional to the square of the distance between objects.
2) Density is defined as mass per unit volume. Specific gravity is the ratio of a substance's density to that of water.
3) Archimedes' principle states that the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object. This principle is applied in nursing for examples like hydrometers and urinometers.
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Upthrust
- 1. Sacred Heart School, MOGA Presented by:- Name = Sumer Sikri Class = 9th c ROLL no.= 39 Submitted to:- Rohan Jain
- 3. WHAT ’ S UPTHRUST Upthrust is a force that only exists in fluids, such as lakes, oceans, swimming pools and even cups of tea! It is a push that always goes straight up, against the direction of gravity.
- 4. UPTHRUST IN ACTION This boat has gravity pushing it down, and the upthrust of the water pushing up. Because the forces are balanced, the ship floats.
- 5. The larger the surface area of an object, the more the upthrust. Shape Affects upthrust
- 7. UPTHRUST FORMULA Upthrust = Weight of object in air – Weight of object in water
- 9. Biography • Archimedes was born around 287 B.C in the Greek City. • He is a Greek mathematician, physicist, and astronomer. • He died around 212 B.C at the age of 75.
- 10. Archimedes’ Principle Archimedes Principle states that when a body is immersed partially or fully in a fluid, it experiences an upward force. This force is equal to the weight of the fluid displaced by it.
- 11. Archimedes’ principle • Archimedes Principle states that when a body is immersed partially or fully in a fluid, it experiences an upward force. This force is equal to the weight of the fluid displaced by it.