Friction is a force that opposes the relative motion between two objects in contact. There are two main types of friction: static friction and kinetic friction. Friction can be both helpful and harmful. It allows for walking and braking a bicycle but also causes wear and tear over time. Friction depends on factors like the roughness and weight of surfaces, and it can be increased or decreased through these surface properties.
The document discusses friction, including its various types and how it relates to forces. It defines static and kinetic friction, explains how friction forces are calculated using coefficients of friction, and shows examples of friction forces for different materials. The document also explores how friction forces change relative to applied forces and transitions from static to kinetic friction. It demonstrates how normal forces and maximum static friction forces are used to determine if an object will begin sliding or not.
Friction is a force that opposes the motion of objects that are touching and moving past each other. There are four main types of friction: static friction between non-moving objects, sliding friction between moving objects, rolling friction which is much less than static or sliding friction, and fluid friction caused by air or water resistance. Gravity is an attractive force that pulls objects towards the center of Earth. Falling objects experience both the force of gravity accelerating them downward and the resistance of air slowing them down, reaching a steady speed known as terminal velocity when these two forces balance.
Presentation on Friction (Static, Kinetic and Co-efficient of Friction)Md. Sirajul Islam
Friction is an important term, By this presentation I have learned lot about friction, types of friction, major types, application of friction, static and kinetic friction, law of friction, Co efficient of frictions.
I think this all information help you all to understand friction. This information is given by lot of legal sites.
In this lesson, students will learn how gravity & friction can take affect on the simple things we do everyday of our lives. Learn the 3 main types of friction, & air resistance, plus a few examples. Finally, learn about terminal velocity & get a basic introduction to magnetic & electric forces with a slight distinction for buoyancy & density.
Friction is the force that resists the relative motion between two objects in contact. It is caused by the microscopic bumps and ridges on object surfaces that interlock when they rub against each other. There are different types of friction including sliding friction, rolling friction, fluid or viscous friction, and static friction. Friction can be both helpful, like allowing us to walk without slipping, and harmful, like causing wear on engine parts. It can be increased by pressing surfaces more firmly together and decreased by applying a lubricant between surfaces. Friction ultimately results in the conversion of kinetic energy into thermal energy, causing objects to heat up as they rub against each other.
Friction. Do you know what is friction and how it plays different roles in our general life. There are many section in our life where friction is necessary like - in playing sitar and guitar, walking on the road and to hold something in our hand or in any mechanical devices. But there are many field where friction is not required like - in machines where two surfaces meet at a point. Due to this the life of the machine parts get decreased and failure may be occur there. Know more about different laws of friction, types of friction, elimination of the friction.
Friction is a force that opposes the relative motion between two objects in contact. There are two main types of friction: static friction and kinetic friction. Friction can be both helpful and harmful. It allows for walking and braking a bicycle but also causes wear and tear over time. Friction depends on factors like the roughness and weight of surfaces, and it can be increased or decreased through these surface properties.
The document discusses friction, including its various types and how it relates to forces. It defines static and kinetic friction, explains how friction forces are calculated using coefficients of friction, and shows examples of friction forces for different materials. The document also explores how friction forces change relative to applied forces and transitions from static to kinetic friction. It demonstrates how normal forces and maximum static friction forces are used to determine if an object will begin sliding or not.
Friction is a force that opposes the motion of objects that are touching and moving past each other. There are four main types of friction: static friction between non-moving objects, sliding friction between moving objects, rolling friction which is much less than static or sliding friction, and fluid friction caused by air or water resistance. Gravity is an attractive force that pulls objects towards the center of Earth. Falling objects experience both the force of gravity accelerating them downward and the resistance of air slowing them down, reaching a steady speed known as terminal velocity when these two forces balance.
Presentation on Friction (Static, Kinetic and Co-efficient of Friction)Md. Sirajul Islam
Friction is an important term, By this presentation I have learned lot about friction, types of friction, major types, application of friction, static and kinetic friction, law of friction, Co efficient of frictions.
I think this all information help you all to understand friction. This information is given by lot of legal sites.
In this lesson, students will learn how gravity & friction can take affect on the simple things we do everyday of our lives. Learn the 3 main types of friction, & air resistance, plus a few examples. Finally, learn about terminal velocity & get a basic introduction to magnetic & electric forces with a slight distinction for buoyancy & density.
Friction is the force that resists the relative motion between two objects in contact. It is caused by the microscopic bumps and ridges on object surfaces that interlock when they rub against each other. There are different types of friction including sliding friction, rolling friction, fluid or viscous friction, and static friction. Friction can be both helpful, like allowing us to walk without slipping, and harmful, like causing wear on engine parts. It can be increased by pressing surfaces more firmly together and decreased by applying a lubricant between surfaces. Friction ultimately results in the conversion of kinetic energy into thermal energy, causing objects to heat up as they rub against each other.
Friction. Do you know what is friction and how it plays different roles in our general life. There are many section in our life where friction is necessary like - in playing sitar and guitar, walking on the road and to hold something in our hand or in any mechanical devices. But there are many field where friction is not required like - in machines where two surfaces meet at a point. Due to this the life of the machine parts get decreased and failure may be occur there. Know more about different laws of friction, types of friction, elimination of the friction.
Friction opposes the direction of motion. It is desirable for walking and driving but undesirable when it prevents intended motion. The types of friction are static, kinetic, and rolling. Static friction prevents motion while kinetic friction occurs during sliding. Both depend on the normal force and coefficients of friction that vary based on the materials in contact.
Force is anything that can change the motion of an object or keep it moving. There are different types of forces including contact forces when objects touch, non-contact forces like magnetism that act over a distance, and frictional forces that oppose the relative motion between surfaces in contact. Friction can be beneficial, like allowing us to walk, or non-beneficial, causing wear on machines.
This document discusses the concept of force. It begins by asking what force is present in space and how we should define force. It then outlines a 4 day plan to cover topics related to force, including introduction to force, different types of force, pressure, and atmospheric pressure. Key points covered include that force is an external agent that can change an object's motion, direction, or shape. Force has both magnitude and direction. Contact forces require interaction between objects, while non-contact forces do not. Examples of different types of forces like magnetic, frictional and pressure forces are provided. Pressure is defined as the force applied per unit area. Atmospheric pressure is also discussed.
There are three main types of earthquakes that can occur at plate boundaries:
1) Divergent boundaries occur when hot magma rises and breaks crust apart, shaking the ground.
2) Convergent boundaries happen when plates subduct with one sliding under the other, building pressure until an earthquake occurs.
3) Transform boundaries result from plates moving past each other in opposite directions, causing pressure until they rupture in an earthquake.
1) Forces are pushes or pulls that can cause an object at rest to move or change direction, and are represented by arrows.
2) Balanced forces do not change an object's motion, while unbalanced forces cause a net force and change in motion.
3) There are four types of friction: static, sliding, rolling, and fluid, each opposing different types of motion between objects or objects in motion.
The document discusses the different types of forces that affect an object's motion. It explains that a worker on a roof does not slide off because the balanced forces of static friction and the worker's weight prevent any movement. It defines four types of friction - static, sliding, rolling, and fluid - and describes how each type opposes different kinds of motion between objects. It also discusses how unbalanced forces cause a net force that changes an object's motion, while balanced forces do not affect motion.
1) Earthquakes are caused by the sudden release of energy within the Earth's crust from the buildup of tectonic forces.
2) When rocks break or move during an earthquake, vibrations called seismic waves are produced and travel outward in all directions from the focus of the earthquake.
3) There are three main types of seismic waves - P waves, S waves, and L waves. P waves travel fastest while L waves cause the most damage at the earthquake's epicenter.
This document defines friction and its types, including static and dynamic friction. It discusses limiting friction force, normal reaction force, and coefficient of friction. It provides the laws of static and dynamic friction. Key concepts covered are that friction opposes motion, static friction is when bodies are at rest while dynamic friction occurs when in motion, and coefficient of friction is the ratio of limiting friction force to normal reaction force.
This document is a report on friction that was guided by Prof. Mihir Naik. It defines friction and discusses limiting friction, types of friction including static, dynamic, sliding and rolling friction. It also examines the angle of friction, coefficient of friction, angle of repose, and laws of static and dynamic friction. An example problem is included that calculates the weight of a wooden block given the pull force required to move it and the coefficient of friction. The students involved in the project are listed as Patel Avi H., Kotila Jayveer V., Mistry Aditya P., and Pandya Dhrumil D.
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.Learn more with VidyaBharti Educational Institutions.
Forces can be pushes or pulls and have both size and direction. They are measured in Newtons and can be determined by adding all forces acting on an object together. Most objects experience multiple forces, some acting together and some opposing each other, creating either balanced or unbalanced forces. Friction is a force that resists the relative motion of surfaces in contact and can be either useful, like providing traction, or harmful, like causing overheating. It is measured through sliding, rolling, and static varieties.
Advanced earthquake monitoring techniques allow for more accurate earthquake detection and analysis. New monitoring stations have over 600 sensors installed. Shake maps can now be created for major cities to show seismic shaking. The 3D Full-Scale Earthquake Testing Facility in Japan will replicate large earthquakes to test building designs. Instrumenting buildings provides data to engineer earthquake-resistant structures. Improved monitoring through networks of sensors helps provide warning of impending shaking and tsunamis.
This document summarizes an earthquake that occurred in Sikkim, India in 2011. It discusses the magnitude of the earthquake at 6.9 and the aftershocks that followed throughout the night. It then provides definitions and explanations of key earthquake terms like focus, epicenter, fault, body waves and surface waves. Finally, it discusses the impacts of the earthquake in Sikkim and surrounding areas, including damage to buildings and roads, relief efforts provided, and studies conducted on dams and infrastructure.
This document discusses forces, how forces combine, and how friction affects motion. It defines a force as a push or pull and describes how forces have direction and size measured in newtons. It explains that net force is determined by adding all forces acting on an object and can cause a change in motion. The document also defines types of friction like static and kinetic friction and describes how friction opposes motion between surfaces. It discusses factors that affect friction like roughness and applied force between surfaces.
Forces can be pushes or pulls that cause motion or changes in motion. Gravity and magnetism are non-contact forces - gravity pulls objects toward the center of Earth, while magnetism is the force produced by magnets. A force puts an object in motion, stops its motion, or changes the way it moves. Applying more force causes an object to move faster or allows heavier objects to be moved. Machines are tools that make work easier. Simple machines include levers, pulleys, and inclined planes, while complex machines have multiple simple machines working together.
This document discusses faults and earthquakes. It describes how faults are fractures in the Earth's crust where earthquakes occur. There are different types of stresses that can cause faults, such as tensional, compressional, and shear stresses. Active faults have generated earthquakes within the last 10,000 years and may continue to do so, while inactive faults are not likely to produce future quakes. When rocks break along a fault, stored elastic energy is released as seismic energy in the form of seismic waves, causing earthquakes. Earthquakes are recorded by modern seismographs that detect seismic waves and produce seismograms. Earthquake preparedness is important, as described in the final section.
Earthquakes occur when energy stored in Earth's crust is suddenly released, causing seismic waves. The focus is where the seismic waves originate underground, and the epicenter is the point directly above on the surface. There are three main types of seismic waves - P waves, S waves, and L waves - which travel outward from the focus. Earthquakes are measured by their magnitude, which indicates the amount of energy released, and by their intensity, which describes the observed effects on people and structures.
Friction is the force that opposes the relative motion between two surfaces in contact. It is caused by either the interlocking of the irregular surfaces where they meet, or the electrostatic attraction between the atoms of the two surfaces. Static friction is the force needed to initially move an object from rest, while sliding or kinetic friction is the lesser force needed to keep it moving. Friction has both advantages, like enabling walking and braking, and disadvantages, such as wearing down materials. Methods to increase friction include adding treads or spikes, while decreasing friction can be achieved through lubrication or making surfaces smoother and rounder.
A force is a push or pull that cannot be seen but can be felt and observed through its effects. Forces result from interactions between objects and can cause changes in the motion, speed, direction, or shape of an object. The document defines different types of forces including contact forces like muscular force and friction, as well as non-contact forces like magnetic, electrostatic, and gravitational forces. It also discusses pressure as the force applied over an area, with examples of how pressure is affected by force and surface area.
Friction is a force that opposes the relative motion between two surfaces in contact. The amount of friction depends on the type of surfaces and the force pressing them together. Friction can be beneficial by allowing us to grip objects, but also harmful as it causes wear and reduces efficiency. Rough surfaces have more friction than smooth surfaces due to more contact points. Friction converts kinetic energy into thermal energy, and lubricants can reduce friction to improve machine efficiency.
Friction is the force that opposes the relative motion between two objects in contact. There are different types of friction including static, kinetic, sliding, rolling, and fluid friction. Static friction acts on objects at rest and can be modeled using the coefficient of static friction. Kinetic friction acts on moving objects and is typically less than static friction. It can be modeled using the coefficient of kinetic friction. Friction plays an important role in physics problems involving inclined planes and motion.
Friction opposes the direction of motion. It is desirable for walking and driving but undesirable when it prevents intended motion. The types of friction are static, kinetic, and rolling. Static friction prevents motion while kinetic friction occurs during sliding. Both depend on the normal force and coefficients of friction that vary based on the materials in contact.
Force is anything that can change the motion of an object or keep it moving. There are different types of forces including contact forces when objects touch, non-contact forces like magnetism that act over a distance, and frictional forces that oppose the relative motion between surfaces in contact. Friction can be beneficial, like allowing us to walk, or non-beneficial, causing wear on machines.
This document discusses the concept of force. It begins by asking what force is present in space and how we should define force. It then outlines a 4 day plan to cover topics related to force, including introduction to force, different types of force, pressure, and atmospheric pressure. Key points covered include that force is an external agent that can change an object's motion, direction, or shape. Force has both magnitude and direction. Contact forces require interaction between objects, while non-contact forces do not. Examples of different types of forces like magnetic, frictional and pressure forces are provided. Pressure is defined as the force applied per unit area. Atmospheric pressure is also discussed.
There are three main types of earthquakes that can occur at plate boundaries:
1) Divergent boundaries occur when hot magma rises and breaks crust apart, shaking the ground.
2) Convergent boundaries happen when plates subduct with one sliding under the other, building pressure until an earthquake occurs.
3) Transform boundaries result from plates moving past each other in opposite directions, causing pressure until they rupture in an earthquake.
1) Forces are pushes or pulls that can cause an object at rest to move or change direction, and are represented by arrows.
2) Balanced forces do not change an object's motion, while unbalanced forces cause a net force and change in motion.
3) There are four types of friction: static, sliding, rolling, and fluid, each opposing different types of motion between objects or objects in motion.
The document discusses the different types of forces that affect an object's motion. It explains that a worker on a roof does not slide off because the balanced forces of static friction and the worker's weight prevent any movement. It defines four types of friction - static, sliding, rolling, and fluid - and describes how each type opposes different kinds of motion between objects. It also discusses how unbalanced forces cause a net force that changes an object's motion, while balanced forces do not affect motion.
1) Earthquakes are caused by the sudden release of energy within the Earth's crust from the buildup of tectonic forces.
2) When rocks break or move during an earthquake, vibrations called seismic waves are produced and travel outward in all directions from the focus of the earthquake.
3) There are three main types of seismic waves - P waves, S waves, and L waves. P waves travel fastest while L waves cause the most damage at the earthquake's epicenter.
This document defines friction and its types, including static and dynamic friction. It discusses limiting friction force, normal reaction force, and coefficient of friction. It provides the laws of static and dynamic friction. Key concepts covered are that friction opposes motion, static friction is when bodies are at rest while dynamic friction occurs when in motion, and coefficient of friction is the ratio of limiting friction force to normal reaction force.
This document is a report on friction that was guided by Prof. Mihir Naik. It defines friction and discusses limiting friction, types of friction including static, dynamic, sliding and rolling friction. It also examines the angle of friction, coefficient of friction, angle of repose, and laws of static and dynamic friction. An example problem is included that calculates the weight of a wooden block given the pull force required to move it and the coefficient of friction. The students involved in the project are listed as Patel Avi H., Kotila Jayveer V., Mistry Aditya P., and Pandya Dhrumil D.
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.Learn more with VidyaBharti Educational Institutions.
Forces can be pushes or pulls and have both size and direction. They are measured in Newtons and can be determined by adding all forces acting on an object together. Most objects experience multiple forces, some acting together and some opposing each other, creating either balanced or unbalanced forces. Friction is a force that resists the relative motion of surfaces in contact and can be either useful, like providing traction, or harmful, like causing overheating. It is measured through sliding, rolling, and static varieties.
Advanced earthquake monitoring techniques allow for more accurate earthquake detection and analysis. New monitoring stations have over 600 sensors installed. Shake maps can now be created for major cities to show seismic shaking. The 3D Full-Scale Earthquake Testing Facility in Japan will replicate large earthquakes to test building designs. Instrumenting buildings provides data to engineer earthquake-resistant structures. Improved monitoring through networks of sensors helps provide warning of impending shaking and tsunamis.
This document summarizes an earthquake that occurred in Sikkim, India in 2011. It discusses the magnitude of the earthquake at 6.9 and the aftershocks that followed throughout the night. It then provides definitions and explanations of key earthquake terms like focus, epicenter, fault, body waves and surface waves. Finally, it discusses the impacts of the earthquake in Sikkim and surrounding areas, including damage to buildings and roads, relief efforts provided, and studies conducted on dams and infrastructure.
This document discusses forces, how forces combine, and how friction affects motion. It defines a force as a push or pull and describes how forces have direction and size measured in newtons. It explains that net force is determined by adding all forces acting on an object and can cause a change in motion. The document also defines types of friction like static and kinetic friction and describes how friction opposes motion between surfaces. It discusses factors that affect friction like roughness and applied force between surfaces.
Forces can be pushes or pulls that cause motion or changes in motion. Gravity and magnetism are non-contact forces - gravity pulls objects toward the center of Earth, while magnetism is the force produced by magnets. A force puts an object in motion, stops its motion, or changes the way it moves. Applying more force causes an object to move faster or allows heavier objects to be moved. Machines are tools that make work easier. Simple machines include levers, pulleys, and inclined planes, while complex machines have multiple simple machines working together.
This document discusses faults and earthquakes. It describes how faults are fractures in the Earth's crust where earthquakes occur. There are different types of stresses that can cause faults, such as tensional, compressional, and shear stresses. Active faults have generated earthquakes within the last 10,000 years and may continue to do so, while inactive faults are not likely to produce future quakes. When rocks break along a fault, stored elastic energy is released as seismic energy in the form of seismic waves, causing earthquakes. Earthquakes are recorded by modern seismographs that detect seismic waves and produce seismograms. Earthquake preparedness is important, as described in the final section.
Earthquakes occur when energy stored in Earth's crust is suddenly released, causing seismic waves. The focus is where the seismic waves originate underground, and the epicenter is the point directly above on the surface. There are three main types of seismic waves - P waves, S waves, and L waves - which travel outward from the focus. Earthquakes are measured by their magnitude, which indicates the amount of energy released, and by their intensity, which describes the observed effects on people and structures.
Friction is the force that opposes the relative motion between two surfaces in contact. It is caused by either the interlocking of the irregular surfaces where they meet, or the electrostatic attraction between the atoms of the two surfaces. Static friction is the force needed to initially move an object from rest, while sliding or kinetic friction is the lesser force needed to keep it moving. Friction has both advantages, like enabling walking and braking, and disadvantages, such as wearing down materials. Methods to increase friction include adding treads or spikes, while decreasing friction can be achieved through lubrication or making surfaces smoother and rounder.
A force is a push or pull that cannot be seen but can be felt and observed through its effects. Forces result from interactions between objects and can cause changes in the motion, speed, direction, or shape of an object. The document defines different types of forces including contact forces like muscular force and friction, as well as non-contact forces like magnetic, electrostatic, and gravitational forces. It also discusses pressure as the force applied over an area, with examples of how pressure is affected by force and surface area.
Friction is a force that opposes the relative motion between two surfaces in contact. The amount of friction depends on the type of surfaces and the force pressing them together. Friction can be beneficial by allowing us to grip objects, but also harmful as it causes wear and reduces efficiency. Rough surfaces have more friction than smooth surfaces due to more contact points. Friction converts kinetic energy into thermal energy, and lubricants can reduce friction to improve machine efficiency.
Friction is the force that opposes the relative motion between two objects in contact. There are different types of friction including static, kinetic, sliding, rolling, and fluid friction. Static friction acts on objects at rest and can be modeled using the coefficient of static friction. Kinetic friction acts on moving objects and is typically less than static friction. It can be modeled using the coefficient of kinetic friction. Friction plays an important role in physics problems involving inclined planes and motion.
Introduction to Friction - Types and causetaruna25bhatia
The document discusses friction and the factors that affect it. It states that friction is a contact force that always opposes relative motion between two surfaces in contact. It acts along the surfaces. The document then discusses how friction increases with rougher surfaces and greater forces pressing the surfaces together, giving examples to illustrate each point. An experiment is described where the effect of increasing weight on friction is observed.
Friction opposes the motion of surfaces in contact. There are two types of friction: static and kinetic. Static friction acts when surfaces are not moving, while kinetic friction acts when surfaces are moving against each other. Frictional force depends on the materials in contact and the normal force pressing the surfaces together. It can be calculated using the coefficient of friction, which relates frictional and normal forces and depends on the surface materials.
Forces can be pushes, pulls, or a combination of both. A force is any interaction between two objects that causes a change in motion or shape. There are two main types of forces - contact forces that act when objects touch, and non-contact forces that act over a distance like magnetic or gravitational forces. Pressure is the amount of force applied over a given area, and depends on both the force and the contact area. Applying force over a smaller area results in greater pressure.
Friction is a force that opposes the motion of two surfaces in contact with each other. There are two types of friction: static friction and kinetic friction. Static friction acts when the surfaces are not moving, while kinetic friction acts when the surfaces are sliding against each other. The amount of friction depends on the materials and the normal force pressing the surfaces together, with friction force being proportional to the normal force times the coefficient of friction.
Best ppt on friction explaination, types of friction ,advantage & disadvantage of friction.effects of friction, methods of increacing and reducing friction,with example
This document discusses the different types of friction:
Static friction is the friction between two stationary surfaces in contact. Sliding friction is weaker and acts when surfaces slide over each other. Rolling friction is even weaker and occurs when objects roll over a surface. Fluid friction is the resistance caused when a fluid (gas or liquid) flows past a solid surface or another fluid. Streamlined shapes help reduce fluid friction by decreasing drag.
This document discusses friction and gravity. It defines friction as the force that two surfaces exert on each other when rubbing together, and identifies four types of friction: static, sliding, rolling, and fluid friction. Gravity is defined as a force that pulls objects toward each other. The document explains how mass and distance affect gravitational attraction between objects. It also discusses concepts related to gravity and motion like free fall, air resistance, terminal velocity, and projectile motion.
Friction is the force that opposes the motion of one object over another. It arises due to the interlocking of surfaces and comes in three types: static, kinetic, and limiting friction. Static friction prevents motion between objects that are not moving, while kinetic friction acts on objects already in motion. Limiting friction is the maximum static friction right before an object begins moving.
Friction is a force that opposes the relative motion between two surfaces in contact. It occurs due to the roughness of surfaces on a microscopic level, with hills and valleys on each surface interacting with the other. The amount of friction depends on two main factors - the roughness of the surfaces and the force pushing them together, with rougher surfaces and greater pushing forces leading to higher friction. There are different types of friction including sliding, fluid, rolling, and static friction. Friction can be both beneficial and harmful, and there are various ways to reduce or increase the amount of friction depending on the situation.
Friction is the force that resists the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. It is caused by the interaction between two surfaces in contact and depends on the nature of the surfaces, with smoother surfaces producing less friction. Friction acts to oppose motion, as seen when a rolling ball gradually slows to a stop due to friction between the ball and ground, or a bicycle slows after pedaling stops due to friction between its wheels and the road. The factors affecting friction are the nature of the surfaces in contact and the force pressing the surfaces together.
Energy and Change. Sub-topic: Forces, Strand 3, term 3.
Unit focusing on forces: what are forces, how do we see them, what do they do, types of forces, and who Discovered forces.
The document discusses different types of friction including static, kinetic, sliding, rolling, and fluid friction. It provides formulas for calculating static and kinetic friction forces and explains how they relate to the normal force and coefficients of friction. The coefficients of friction depend on the properties of the surfaces in contact, and can be measured experimentally for different surface combinations. Microscopic surface irregularities cause friction as high points on each surface temporarily bond during contact.
Friction is the force that opposes the relative motion between two surfaces in contact. It always acts in the direction opposite to the applied motion. Friction depends on several factors like the nature of the surfaces and applied load. It can be beneficial by helping us hold and grip objects, but also detrimental as it causes wearing of surfaces and generates heat. Methods to reduce friction include lubrication, use of rolling motion, and smoothening surfaces. Friction plays an important role in our daily lives and technologies.
Newton's First Law states that 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 unbalanced force. Inertia is an object's resistance to changes in motion and is determined by its mass. Friction is a force that opposes the motion between two surfaces in contact and depends on factors such as the roughness of the surfaces and whether the object is moving or stationary. The net force on an object, which is the combination of all individual forces, determines whether its motion will change.
Friction ppt by irtizah ahmad student 8ahmadirtizah
Friction is the force that opposes the relative motion of two surfaces in contact. There are four main types of friction: static, sliding, rolling, and limiting friction. Static friction keeps objects at rest while sliding friction is the resistance between two objects in motion. Rolling friction occurs when a wheel or cylinder rolls over a surface. Limiting friction is the maximum friction between two static surfaces. Friction can be reduced by making surfaces smoother, using lubrication, reducing normal force, or decreasing contact between surfaces.
The document discusses the Indian Constitution and the need for laws. It provides definitions of key terms like constitution, sovereignty, secularism, and democratic republic as they relate to India. The constitution establishes India as a sovereign, socialist, secular, democratic republic that assures justice, equality and liberty. Laws are important to ensure a safe and fair society where the rich and powerful don't dominate. The constitution gives legality to laws and the Supreme Court can rule on their constitutionality. Examples of dissent include Gandhi's Salt Satyagraha protest against the British salt tax law.
Fungi play an important role in making curd and bread through fermentation. Microorganisms have many commercial uses including in food production processes like making curd and bread. Chapter 2 of Class 8 NCERT book discusses microorganisms like fungi and their applications in commercial processes.
cheeck this class 8 maths ppt in class 8 students or below can refer this ppt and make their mind map for maths. thank you
and understant the table given in power point presentation
give me like please
This document summarizes the first chapter of Mary Shelley's novel Frankenstein. It describes how the young English captain Robert Walton's small sailing ship is in danger of being crushed by the frozen Arctic ice around it. As Walton ponders whether to risk the lives of his courageous crew for his personal goal of discovery, the crew spots through the lifting fog an unusual spectacle - a sledge with dogs and a gigantic driver in the middle of the frozen sea. The chapter leaves Walton doubtful of whether they will survive the harsh conditions of their perilous voyage attempting to find a sea route near the North Pole from Europe to Asia.
The 18th century saw major political developments in India with the arrival of European trading powers like the British, French, Dutch, and Portuguese who were attracted by the riches of Indian spice trade. Over time the British transformed from traders to political rulers, establishing control over large areas. British rule over India introduced sweeping changes administratively, politically, economically, and culturally and unified India under their control.
The binding of cosmological structures by massless topological defectsSérgio Sacani
Assuming spherical symmetry and weak field, it is shown that if one solves the Poisson equation or the Einstein field
equations sourced by a topological defect, i.e. a singularity of a very specific form, the result is a localized gravitational
field capable of driving flat rotation (i.e. Keplerian circular orbits at a constant speed for all radii) of test masses on a thin
spherical shell without any underlying mass. Moreover, a large-scale structure which exploits this solution by assembling
concentrically a number of such topological defects can establish a flat stellar or galactic rotation curve, and can also deflect
light in the same manner as an equipotential (isothermal) sphere. Thus, the need for dark matter or modified gravity theory is
mitigated, at least in part.
The debris of the ‘last major merger’ is dynamically youngSérgio Sacani
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
Travis Hills of MN is Making Clean Water Accessible to All Through High Flux ...Travis Hills MN
By harnessing the power of High Flux Vacuum Membrane Distillation, Travis Hills from MN envisions a future where clean and safe drinking water is accessible to all, regardless of geographical location or economic status.
PPT on Direct Seeded Rice presented at the three-day 'Training and Validation Workshop on Modules of Climate Smart Agriculture (CSA) Technologies in South Asia' workshop on April 22, 2024.
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...Scintica Instrumentation
Targeting Hsp90 and its pathogen Orthologs with Tethered Inhibitors as a Diagnostic and Therapeutic Strategy for cancer and infectious diseases with Dr. Timothy Haystead.
ESA/ACT Science Coffee: Diego Blas - Gravitational wave detection with orbita...Advanced-Concepts-Team
Presentation in the Science Coffee of the Advanced Concepts Team of the European Space Agency on the 07.06.2024.
Speaker: Diego Blas (IFAE/ICREA)
Title: Gravitational wave detection with orbital motion of Moon and artificial
Abstract:
In this talk I will describe some recent ideas to find gravitational waves from supermassive black holes or of primordial origin by studying their secular effect on the orbital motion of the Moon or satellites that are laser ranged.
When I was asked to give a companion lecture in support of ‘The Philosophy of Science’ (https://shorturl.at/4pUXz) I decided not to walk through the detail of the many methodologies in order of use. Instead, I chose to employ a long standing, and ongoing, scientific development as an exemplar. And so, I chose the ever evolving story of Thermodynamics as a scientific investigation at its best.
Conducted over a period of >200 years, Thermodynamics R&D, and application, benefitted from the highest levels of professionalism, collaboration, and technical thoroughness. New layers of application, methodology, and practice were made possible by the progressive advance of technology. In turn, this has seen measurement and modelling accuracy continually improved at a micro and macro level.
Perhaps most importantly, Thermodynamics rapidly became a primary tool in the advance of applied science/engineering/technology, spanning micro-tech, to aerospace and cosmology. I can think of no better a story to illustrate the breadth of scientific methodologies and applications at their best.
ESR spectroscopy in liquid food and beverages.pptxPRIYANKA PATEL
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Mending Clothing to Support Sustainable Fashion_CIMaR 2024.pdfSelcen Ozturkcan
Ozturkcan, S., Berndt, A., & Angelakis, A. (2024). Mending clothing to support sustainable fashion. Presented at the 31st Annual Conference by the Consortium for International Marketing Research (CIMaR), 10-13 Jun 2024, University of Gävle, Sweden.
Immersive Learning That Works: Research Grounding and Paths ForwardLeonel Morgado
We will metaverse into the essence of immersive learning, into its three dimensions and conceptual models. This approach encompasses elements from teaching methodologies to social involvement, through organizational concerns and technologies. Challenging the perception of learning as knowledge transfer, we introduce a 'Uses, Practices & Strategies' model operationalized by the 'Immersive Learning Brain' and ‘Immersion Cube’ frameworks. This approach offers a comprehensive guide through the intricacies of immersive educational experiences and spotlighting research frontiers, along the immersion dimensions of system, narrative, and agency. Our discourse extends to stakeholders beyond the academic sphere, addressing the interests of technologists, instructional designers, and policymakers. We span various contexts, from formal education to organizational transformation to the new horizon of an AI-pervasive society. This keynote aims to unite the iLRN community in a collaborative journey towards a future where immersive learning research and practice coalesce, paving the way for innovative educational research and practice landscapes.
2. • In 1826, John Walker, a chemist in Stockton on Tees, discovered
through lucky accident that a stick coated with chemicals burst
into flame when scraped across his hearth at home. He went on
to invent the first friction match. Until the first half of the
nineteenth century, the process by which fire was created was
slow and laborious. Walker's friction match revolutionized the
production, application and the portability of fire. Walker sold
his first "Friction Light" on the 12th April 1827 from his
pharmacy in Stockton on tin 1826.
3. Static friction is a force that keeps an object at rest. If a
small amount of force is applied to an object, the static
friction has an equal magnitude in the opposite
direction.
standing friction:- static
moving friction:- kinetic
4. • Kinetic friction is a force that acts between
moving surfaces. An object that is being
moved over a surface will experience a force
in the opposite direction as its movement.
The magnitude of the force depends on the
coefficient of kinetic friction between the two
kinds of material.
5. Friction is said to be a necessary evil because it is
useful as well as harmful. friction helps us to walk,
write, hold things, lift objects.
Without friction many essential processes can not be
done.
6. a. That's why rubbing your hands together makes them
warmer. ... Friction causes the molecules on rubbing
surfaces to move faster, so they have more energy.
This gives them a higher temperature, and they feel
warmer.
match
stick
Match box
7. 1) Force of friction :-
Force of friction is the force which opposes the motion of an object
over a surface.
The force of friction acts between the object and the surface.
Eg :- A ball rolling on ground gradually slows down and comes to
rest due to force of friction between the ball and the ground.
If we stop pedaling a bicycle, it gradually slows down and
comes to a stop due to force of friction between the wheel and
the road.
8. Factors affecting friction :-
Friction depends upon two factors. They are :-
i) Nature of the surfaces in contact. ( The smoothness
of the
surfaces).
ii) How hard the surfaces press together.
Friction is less on a smooth surface.
Friction is more on a rough surface.
9. • Cause of friction :-
• Friction is caused due to the interlocking of
irregularities between the
• two surfaces in contact.
• Smooth surfaces have minute irregularities
between the two surfaces.
• Rough surfaces have larger irregularities
between the two surfaces.
• So force of friction is more if the surfaces
are rough.
10. • Rolling friction (or rolling resistance) is the resistive
force that slows down the motion of a rolling ball or
wheel. When a force or torque is applied to a
stationary wheel, static rolling friction holds back the
motion
11. • The term sliding friction refers to the resistance
created by two objects sliding against each other.
This can also be called kinetic friction. Sliding
friction is intended to stop an object from moving.