Friction Presentation
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This presentation discusses friction. It includes the following sections: - Friction Basics: Friction is a force that holds back the movement of sliding objects and appears to stop motion. It is measured by the coefficient of friction between materials. - Measuring Friction: The coefficient of friction measures how easily objects move relative to each other, and concrete has a high coefficient compared to Teflon. - Friction and Gases: Gases offer resistance to motion through collisions rather than sliding. This is called air resistance. - Friction and Liquids: Liquids reduce friction between surfaces but offer their own resistance to motion. Engine oil reduces friction and wear in engines.
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friction ppt
This document summarizes friction in physics. It defines friction as the force that opposes the relative motion between two surfaces in contact. It then discusses the factors that affect friction, the different types of friction (static, sliding, rolling, fluid), their definitions and examples. The document also covers the effects, advantages and disadvantages of friction, and methods to increase or reduce friction such as changing surface roughness or using lubricants. It concludes that friction is sometimes necessary but also causes issues, so it can be considered a "necessary evil".
Presentation on Friction (Static, Kinetic and Co-efficient of Friction)
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.
Forces in Fluids
The document summarizes key concepts about fluids and their properties. It explains that fluids exert pressure evenly, and pressure increases with depth. It also discusses how atmospheric pressure varies with altitude. Objects float based on buoyant force balancing their weight. Denser objects sink while less dense objects float. Fluids flow from high to low pressure. The document also examines how fluid speed relates to pressure through Bernoulli's principle and how wing design and size influence flight.
Pressure
Pressure depends on the force applied over an area. It can be increased by either increasing the force or decreasing the area over which the force is applied. Pressure is calculated as force divided by area. Pressure acts equally in all directions within fluids as the particles collide with surfaces. Air pressure decreases with increasing elevation due to lower density, while water pressure increases greatly with depth.
Friction
Friction is a force that slows down moving objects or prevents stationary objects from moving .
Friction is a contact force .
Friction produces heat .
For example – A matchstick
Friction opposes the motion of an object
When one surface moves over another , these grooves and ridges get caught up with each other and slow down the motion . This causes friction .
Ppt Friction
Friction opposes the motion of objects and is caused by bumps on surfaces sticking together when they touch. There are three main types of friction: static friction between non-moving surfaces, sliding friction between surfaces moving past each other, and rolling friction between rolling objects and surfaces. Adding sand to tires increases rolling friction and helps cars move on slippery surfaces by providing more traction between the tires and the ground. This relates to Newton's Second Law, as increasing friction generates a greater net force to overcome inertia according to the formula F=ma.
Friction
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.
Coduction, convection and radiation
Heat can be transferred through three methods: conduction, convection, and radiation. Conduction involves the transfer of heat between objects in direct contact through vibrations of atoms. Convection involves the transfer of heat by the circulation of fluids like air and water. Radiation involves the transfer of heat through electromagnetic waves and does not require a medium. Each method allows for heat to travel from warmer to cooler regions until thermal equilibrium is reached.
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friction ppt
This document summarizes friction in physics. It defines friction as the force that opposes the relative motion between two surfaces in contact. It then discusses the factors that affect friction, the different types of friction (static, sliding, rolling, fluid), their definitions and examples. The document also covers the effects, advantages and disadvantages of friction, and methods to increase or reduce friction such as changing surface roughness or using lubricants. It concludes that friction is sometimes necessary but also causes issues, so it can be considered a "necessary evil".
Presentation on Friction (Static, Kinetic and Co-efficient of Friction)
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.
Forces in Fluids
The document summarizes key concepts about fluids and their properties. It explains that fluids exert pressure evenly, and pressure increases with depth. It also discusses how atmospheric pressure varies with altitude. Objects float based on buoyant force balancing their weight. Denser objects sink while less dense objects float. Fluids flow from high to low pressure. The document also examines how fluid speed relates to pressure through Bernoulli's principle and how wing design and size influence flight.
Pressure
Pressure depends on the force applied over an area. It can be increased by either increasing the force or decreasing the area over which the force is applied. Pressure is calculated as force divided by area. Pressure acts equally in all directions within fluids as the particles collide with surfaces. Air pressure decreases with increasing elevation due to lower density, while water pressure increases greatly with depth.
Friction
Friction is a force that slows down moving objects or prevents stationary objects from moving .
Friction is a contact force .
Friction produces heat .
For example – A matchstick
Friction opposes the motion of an object
When one surface moves over another , these grooves and ridges get caught up with each other and slow down the motion . This causes friction .
Ppt Friction
Friction opposes the motion of objects and is caused by bumps on surfaces sticking together when they touch. There are three main types of friction: static friction between non-moving surfaces, sliding friction between surfaces moving past each other, and rolling friction between rolling objects and surfaces. Adding sand to tires increases rolling friction and helps cars move on slippery surfaces by providing more traction between the tires and the ground. This relates to Newton's Second Law, as increasing friction generates a greater net force to overcome inertia according to the formula F=ma.
Friction
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.
Coduction, convection and radiation
Heat can be transferred through three methods: conduction, convection, and radiation. Conduction involves the transfer of heat between objects in direct contact through vibrations of atoms. Convection involves the transfer of heat by the circulation of fluids like air and water. Radiation involves the transfer of heat through electromagnetic waves and does not require a medium. Each method allows for heat to travel from warmer to cooler regions until thermal equilibrium is reached.
Friction ppt
Friction occurs between two surfaces in contact. It acts opposite to the direction of motion and depends on factors like roughness, force between surfaces, and type of motion. Friction produces heat and different types include static, kinetic, sliding, and rolling. It can be reduced using lubricants between surfaces. Lubrication systems in engines use oil to reduce friction between moving parts by forming a separating film. Oil viscosity and properties help with lubrication under different temperatures. Tribology principles can significantly reduce energy consumption and emissions in various industries through improved lubrication and wear reduction technologies.
Buoyancy & floatation
1) Buoyancy is the upward force exerted by a fluid that opposes the weight of an immersed object. This force is equal to the weight of the fluid displaced by the object and allows objects with lower density than the fluid to float.
2) The key factors that determine if an object will float or sink are the density of the object compared to the fluid density, the weight of fluid displaced versus the object's weight, and the object's shape.
3) Stability of floating objects depends on the location of the meta-center point, which is where the line of buoyancy force meets the axis when tilted. Stable equilibrium requires the meta-center to be above the center of gravity
Pressure
Pressure is defined as force per unit area. Several examples are given to illustrate that pressure increases when a force is applied over a smaller area. Pressure also increases with depth in liquids and density of the liquid. Various instruments are discussed for measuring pressure, including manometers, mercury barometers, aneroid barometers, and pressure gauges. Pascal's principle of transmission of pressure in liquids is demonstrated through experiments. Applications of pressure in hydraulic machines, bicycle pumps, lift pumps, force pumps, and siphons are also described.
S3 Chapter 2 Fluid Pressure
This document discusses fluid pressure and various ways to measure it. It defines pressure as a force per unit area and explains that pressure increases linearly with depth in a static fluid. It also describes how manometers and barometers work to measure pressure differences and atmospheric pressure respectively using the hydrostatic pressure equation. Manometers use columns of liquid like mercury or water, while barometers use a mercury column to directly measure atmospheric pressure at sea level.
FRICTION (advantages and disadvantages)
Friction occurs between two surfaces in contact with each other due to the roughness of the surfaces and force pressing them together. There are two types of friction: static friction and kinetic friction. Static friction occurs when an object is at rest, while kinetic friction occurs between moving surfaces. Friction can be both helpful and harmful. It enables motion like in cars but also causes wear and tear over time. While friction is necessary for important functions, it is also the cause of inefficiencies and damage.
Moments
This document discusses moments and their applications. It defines moment as the product of a force and the perpendicular distance to the point of rotation. There are clockwise and anticlockwise moments. Varignon's principle of moments states the algebraic sum of moments about any point equals the moment of the resultant force. Levers are machines that use moments to multiply force. There are three types of simple levers and examples of levers include scissors and pliers. Compound levers use multiple simple levers together. Moments allow machines like levers to provide mechanical advantage.
Friction, types of friction and different laws of friction
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.
Fluid mechanics in our daily life
This document discusses the importance of fluid mechanics in daily life through various examples. It begins by defining fluid mechanics and its fields of application. It then provides historical context before explaining fluid mechanics underlies many common technologies like air conditioning, gas turbines, rockets, and aerodynamics. More everyday examples are given such as rain droplets forming due to surface tension, hot air balloons rising due to buoyancy, drag forces on trees and leaves, the circulatory system, water pipes, and the operation of hair dryers. In conclusion, fluid mechanics has broad importance across many sectors of engineering and impacts our daily lives more than realized.
Friction
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.
Frictional Force
Friction is the force that resists the motion of objects in contact with each other and is caused by irregularities in the surfaces in contact. The different types of friction include static, sliding, and rolling friction and are affected by factors like the type of surface and amount of force pressing the surfaces together. While friction provides advantages like allowing us to walk without slipping, it also has disadvantages as it slows movement and produces unwanted heat, requiring more energy to overcome. Methods like lubrication and using rollers can help reduce friction.
Friction
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.
3.2 pressure in liquid
Pressure in liquids is determined by the depth and density of the liquid, with deeper depths and denser liquids resulting in higher pressures. Liquids exert pressure equally in all directions, which allows them to be used for applications like dams, intravenous infusions, scuba suits, and public water supply systems that rely on liquid pressure. The formula for pressure in a liquid takes into account the density of the liquid and the depth.
Friction
The document discusses friction, describing it as a force between two surfaces in contact that opposes their motion. It notes friction always acts in the opposite direction of motion and slows moving objects down. The amount of friction depends on the roughness of the surfaces - rougher surfaces produce more friction. Friction can be useful to prevent slipping but also causes wear; lubricants are used to reduce friction between moving parts. The document distinguishes between static and kinetic friction, noting static friction is usually higher and discusses how friction can be reduced in various ways.
Fluid archimedes principle
Archimedes principle
Download:
http://skillcruise.com/academics/mechanical-engineering/fluid-mechanics/
CIRCULAR MOTION
1. Forces cause objects to accelerate by either speeding them up, slowing them down, or changing their direction.
2. For an object to travel in a circular path, it must be accelerating towards the center of the circle. This acceleration is caused by a centripetal force directed towards the center.
3. Examples of centripetal forces include the normal force from a rollercoaster track keeping a cart moving in a circle and gravity keeping satellites in orbit around Earth.
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.
Force
Force is defined as an influence that causes an object to undergo a change in motion. There are two types of forces: contact forces, which require direct physical contact between objects, and action-at-a-distance forces like gravity and magnetism that do not require contact. Newton's second law states that 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. Forces can change the motion of objects by accelerating or retarding them, bring objects to rest, or produce internal stresses in objects. Common forces include applied, gravitational, normal, frictional, air resistance, tension
Lever and Its Types
Lever, simple machine consisting of a rigid bar that rotates about a fixed point, called a fulcrum. Levers affect the effort, or force, needed to do a certain amount of work, and are used to lift heavy objects. To move an object with a lever, force is applied to one end of the lever, and the object to be moved (referred to as the resistance or load) is usually located at the other end of the lever, with the fulcrum somewhere between the two. By varying the distances between the force and the fulcrum and between the load and the fulcrum, the amount of effort needed to move the load can be decreased, making the job easier.
Physicists classify the lever as one of the four simple machines used to do work. (The other three are the pulley, the wheel and axle, and the inclined plane.) Work is defined in physics as the result of a force, such as a person lifting, that moves an object over a distance. A common example of a lever is the seesaw. The human arm is also a lever, where the elbow is the fulcrum and the muscles apply the force.
Introduction of Fluid Mechanics
this unit describes in detail about the Fluid Flow and it have a some example to emphasize the understanding of the entire module.
Buoyancy.ppt
Buoyancy and pressure in fluids are discussed. Objects experience an upward buoyant force when submerged in fluids due to higher pressure at deeper levels pushing up on the bottom of the object. Archimedes' principle states that the buoyant force equals the weight of fluid displaced by the object. The buoyant force can be calculated by subtracting the weight of the object in water from its weight in air.
Friction (6)
This document discusses friction, including its definition as a force that opposes the relative motion between two surfaces in contact. It describes different types of friction like sliding friction, static friction, fluid friction, and rolling friction. It also discusses factors that influence friction like surface texture, lubricants, and how friction can be both advantageous and disadvantageous. For example, friction allows us to walk and grip objects but also leads to wear and reduces machine efficiency by converting mechanical energy to heat.
Friction ppt by irtizah ahmad student 8
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.
More Related Content
What's hot
Friction ppt
Friction occurs between two surfaces in contact. It acts opposite to the direction of motion and depends on factors like roughness, force between surfaces, and type of motion. Friction produces heat and different types include static, kinetic, sliding, and rolling. It can be reduced using lubricants between surfaces. Lubrication systems in engines use oil to reduce friction between moving parts by forming a separating film. Oil viscosity and properties help with lubrication under different temperatures. Tribology principles can significantly reduce energy consumption and emissions in various industries through improved lubrication and wear reduction technologies.
Buoyancy & floatation
1) Buoyancy is the upward force exerted by a fluid that opposes the weight of an immersed object. This force is equal to the weight of the fluid displaced by the object and allows objects with lower density than the fluid to float.
2) The key factors that determine if an object will float or sink are the density of the object compared to the fluid density, the weight of fluid displaced versus the object's weight, and the object's shape.
3) Stability of floating objects depends on the location of the meta-center point, which is where the line of buoyancy force meets the axis when tilted. Stable equilibrium requires the meta-center to be above the center of gravity
Pressure
Pressure is defined as force per unit area. Several examples are given to illustrate that pressure increases when a force is applied over a smaller area. Pressure also increases with depth in liquids and density of the liquid. Various instruments are discussed for measuring pressure, including manometers, mercury barometers, aneroid barometers, and pressure gauges. Pascal's principle of transmission of pressure in liquids is demonstrated through experiments. Applications of pressure in hydraulic machines, bicycle pumps, lift pumps, force pumps, and siphons are also described.
S3 Chapter 2 Fluid Pressure
This document discusses fluid pressure and various ways to measure it. It defines pressure as a force per unit area and explains that pressure increases linearly with depth in a static fluid. It also describes how manometers and barometers work to measure pressure differences and atmospheric pressure respectively using the hydrostatic pressure equation. Manometers use columns of liquid like mercury or water, while barometers use a mercury column to directly measure atmospheric pressure at sea level.
FRICTION (advantages and disadvantages)
Friction occurs between two surfaces in contact with each other due to the roughness of the surfaces and force pressing them together. There are two types of friction: static friction and kinetic friction. Static friction occurs when an object is at rest, while kinetic friction occurs between moving surfaces. Friction can be both helpful and harmful. It enables motion like in cars but also causes wear and tear over time. While friction is necessary for important functions, it is also the cause of inefficiencies and damage.
Moments
This document discusses moments and their applications. It defines moment as the product of a force and the perpendicular distance to the point of rotation. There are clockwise and anticlockwise moments. Varignon's principle of moments states the algebraic sum of moments about any point equals the moment of the resultant force. Levers are machines that use moments to multiply force. There are three types of simple levers and examples of levers include scissors and pliers. Compound levers use multiple simple levers together. Moments allow machines like levers to provide mechanical advantage.
Friction, types of friction and different laws of friction
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.
Fluid mechanics in our daily life
This document discusses the importance of fluid mechanics in daily life through various examples. It begins by defining fluid mechanics and its fields of application. It then provides historical context before explaining fluid mechanics underlies many common technologies like air conditioning, gas turbines, rockets, and aerodynamics. More everyday examples are given such as rain droplets forming due to surface tension, hot air balloons rising due to buoyancy, drag forces on trees and leaves, the circulatory system, water pipes, and the operation of hair dryers. In conclusion, fluid mechanics has broad importance across many sectors of engineering and impacts our daily lives more than realized.
Friction
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.
Frictional Force
Friction is the force that resists the motion of objects in contact with each other and is caused by irregularities in the surfaces in contact. The different types of friction include static, sliding, and rolling friction and are affected by factors like the type of surface and amount of force pressing the surfaces together. While friction provides advantages like allowing us to walk without slipping, it also has disadvantages as it slows movement and produces unwanted heat, requiring more energy to overcome. Methods like lubrication and using rollers can help reduce friction.
Friction
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.
3.2 pressure in liquid
Pressure in liquids is determined by the depth and density of the liquid, with deeper depths and denser liquids resulting in higher pressures. Liquids exert pressure equally in all directions, which allows them to be used for applications like dams, intravenous infusions, scuba suits, and public water supply systems that rely on liquid pressure. The formula for pressure in a liquid takes into account the density of the liquid and the depth.
Friction
The document discusses friction, describing it as a force between two surfaces in contact that opposes their motion. It notes friction always acts in the opposite direction of motion and slows moving objects down. The amount of friction depends on the roughness of the surfaces - rougher surfaces produce more friction. Friction can be useful to prevent slipping but also causes wear; lubricants are used to reduce friction between moving parts. The document distinguishes between static and kinetic friction, noting static friction is usually higher and discusses how friction can be reduced in various ways.
Fluid archimedes principle
Archimedes principle
Download:
http://skillcruise.com/academics/mechanical-engineering/fluid-mechanics/
CIRCULAR MOTION
1. Forces cause objects to accelerate by either speeding them up, slowing them down, or changing their direction.
2. For an object to travel in a circular path, it must be accelerating towards the center of the circle. This acceleration is caused by a centripetal force directed towards the center.
3. Examples of centripetal forces include the normal force from a rollercoaster track keeping a cart moving in a circle and gravity keeping satellites in orbit around Earth.
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.
Force
Force is defined as an influence that causes an object to undergo a change in motion. There are two types of forces: contact forces, which require direct physical contact between objects, and action-at-a-distance forces like gravity and magnetism that do not require contact. Newton's second law states that 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. Forces can change the motion of objects by accelerating or retarding them, bring objects to rest, or produce internal stresses in objects. Common forces include applied, gravitational, normal, frictional, air resistance, tension
Lever and Its Types
Lever, simple machine consisting of a rigid bar that rotates about a fixed point, called a fulcrum. Levers affect the effort, or force, needed to do a certain amount of work, and are used to lift heavy objects. To move an object with a lever, force is applied to one end of the lever, and the object to be moved (referred to as the resistance or load) is usually located at the other end of the lever, with the fulcrum somewhere between the two. By varying the distances between the force and the fulcrum and between the load and the fulcrum, the amount of effort needed to move the load can be decreased, making the job easier.
Physicists classify the lever as one of the four simple machines used to do work. (The other three are the pulley, the wheel and axle, and the inclined plane.) Work is defined in physics as the result of a force, such as a person lifting, that moves an object over a distance. A common example of a lever is the seesaw. The human arm is also a lever, where the elbow is the fulcrum and the muscles apply the force.
Introduction of Fluid Mechanics
this unit describes in detail about the Fluid Flow and it have a some example to emphasize the understanding of the entire module.
Buoyancy.ppt
Buoyancy and pressure in fluids are discussed. Objects experience an upward buoyant force when submerged in fluids due to higher pressure at deeper levels pushing up on the bottom of the object. Archimedes' principle states that the buoyant force equals the weight of fluid displaced by the object. The buoyant force can be calculated by subtracting the weight of the object in water from its weight in air.
What's hot (20)
Friction, types of friction and different laws of friction
Friction, types of friction and different laws of friction
Similar to Friction Presentation
Friction (6)
This document discusses friction, including its definition as a force that opposes the relative motion between two surfaces in contact. It describes different types of friction like sliding friction, static friction, fluid friction, and rolling friction. It also discusses factors that influence friction like surface texture, lubricants, and how friction can be both advantageous and disadvantageous. For example, friction allows us to walk and grip objects but also leads to wear and reduces machine efficiency by converting mechanical energy to heat.
Friction ppt by irtizah ahmad student 8
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.
Friction
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.
Scienceppt 150508120007-lva1-app6892
Best ppt on friction explaination, types of friction ,advantage & disadvantage of friction.effects of friction, methods of increacing and reducing friction,with example
Tribology Aspects .Cause of friction,stick and slip phenomenon,sliding and ro...
This presentation discusses tribology and friction. It covers several key topics:
1. The three main causes of friction are molecular adhesion, surface roughness, and deformation.
2. Stick-slip behavior occurs when the static friction is greater than kinetic friction, leading to intermittent motion.
3. There are two main types of friction - sliding friction which occurs during relative lateral motion, and rolling friction which is easier to overcome.
4. Friction generates heat through the breaking of intermolecular bonds and surface deformation. This heat absorption leads to temperature rises.
5. Common techniques to measure friction include pin-on-disc, pin-on-flat, and crossed cylinder arrangements which allow control of normal load
FRICTION and It's Kind
Kinds of Friction
A moving object is affected by friction. However, the amount of friction may vary depending on the type of surface the object gets in contact with.
Rolling Friction
When an object rolls over a surface , rolling friction is produced. One of the most common examples of rolling friction is the movement of motor vehicle tires on the road , a process that generates heat and sound as by-products. Rolling friction is easier to overcome than sliding friction for similar materials. This type of friction is important to engineers who design certain products. For example, skates, skateboards, and bicycles need wheels that move freely.
Sliding Friction
Sliding friction occurs when two solid surfaces slide over each other. Sliding friction can be useful. For example, you can spread sand on an icy path to improve your footing. Ballet dancers apply a sticky powder to the soles of their ballet slippers so they won’t slip on the dance floor. And when you stop a bicycle with hand brakes, rubber pads slide against the tire surfaces, causing the wheels to slow and eventually stop. On the other hand, sliding friction is a problem if you fall off your bike and skin your knee!
Fluid Friction
Fluids, such as water, oil, or air, are materials that flow easily. Fluid friction occurs when a solid object moves through a fluid. Like rolling friction, fluid friction is easier to overcome than sliding friction.
Static Friction
The friction that acts on objects that are not moving is called static friction. Because of static friction, you must use extra force to start the motion of stationary objects. For example, think about what happens when you try to push a heavy desk across a floor. If you push on the desk with a force less than the force of static friction between the desk and the floor, the desk will not move. To make the desk move, you must exert a force greater than the force of static friction.
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and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
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Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
Unlocking the mysteries of reproduction: Exploring fecundity and gonadosomati...
The pygmy halfbeak Dermogenys colletei, is known for its viviparous nature, this presents an intriguing case of relatively low fecundity, raising questions about potential compensatory reproductive strategies employed by this species. Our study delves into the examination of fecundity and the Gonadosomatic Index (GSI) in the Pygmy Halfbeak, D. colletei (Meisner, 2001), an intriguing viviparous fish indigenous to Sarawak, Borneo. We hypothesize that the Pygmy halfbeak, D. colletei, may exhibit unique reproductive adaptations to offset its low fecundity, thus enhancing its survival and fitness. To address this, we conducted a comprehensive study utilizing 28 mature female specimens of D. colletei, carefully measuring fecundity and GSI to shed light on the reproductive adaptations of this species. Our findings reveal that D. colletei indeed exhibits low fecundity, with a mean of 16.76 ± 2.01, and a mean GSI of 12.83 ± 1.27, providing crucial insights into the reproductive mechanisms at play in this species. These results underscore the existence of unique reproductive strategies in D. colletei, enabling its adaptation and persistence in Borneo's diverse aquatic ecosystems, and call for further ecological research to elucidate these mechanisms. This study lends to a better understanding of viviparous fish in Borneo and contributes to the broader field of aquatic ecology, enhancing our knowledge of species adaptations to unique ecological challenges.
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
The technology uses reclaimed CO₂ as the dyeing medium in a closed loop process. When pressurized, CO₂ becomes supercritical (SC-CO₂). In this state CO₂ has a very high solvent power, allowing the dye to dissolve easily.
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Aleš Zamuda: Randomised Optimisation Algorithms in DAPHNE .
Austrian-Slovenian HPC Meeting 2024 – ASHPC24, Seeblickhotel Grundlsee in Austria, 10–13 June 2024
https://ashpc.eu/
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hematic appreciation test is a psychological assessment tool used to measure an individual's appreciation and understanding of specific themes or topics. This test helps to evaluate an individual's ability to connect different ideas and concepts within a given theme, as well as their overall comprehension and interpretation skills. The results of the test can provide valuable insights into an individual's cognitive abilities, creativity, and critical thinking skillsCompexometric titration/Chelatorphy titration/chelating titration
Classification
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Masking and demasking reagents
Estimation of Magnisium sulphate
Calcium gluconate
Complexometric Titration/ chelatometry titration/chelating titration, introduction, Types-
1.Direct Titration
2.Back Titration
3.Replacement Titration
4.Indirect Titration
Masking agent, Demasking agents
formation of complex
comparition between masking and demasking agents,
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Visual Technique,PM indicators (metallochromic), Indicators of pH, Redox Indicators
Instrumental Techniques-Photometry
Potentiometry
Miscellaneous methods.
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Travis Hills of Minnesota developed a method to convert waste into high-value dry fertilizer, significantly enriching soil quality. By providing farmers with a valuable resource derived from waste, Travis Hills helps enhance farm profitability while promoting environmental stewardship. Travis Hills' sustainable practices lead to cost savings and increased revenue for farmers by improving resource efficiency and reducing waste.
ESR spectroscopy in liquid food and beverages.pptx
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.
The debris of the ‘last major merger’ is dynamically young
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
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at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
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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.
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and the revised UWWTD (Urban Waste Water Treatment Directive)”
如何办理(uvic毕业证书)维多利亚大学毕业证本科学位证书原版一模一样
原版纸张【微信：741003700 】【(uvic毕业证书)维多利亚大学毕业证】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
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8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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Friction Presentation
- 1. Welcome To Our Presentation
- 3. SN. NAME ROLL REMARK 1 Enamul Huque 18-054 2 Raihanul Islam 18-056 3 Md. Sazzad Hossain 18-068 4 Emon Hasan Rahat 18-134 5 Mokhlesur Rahman 18-158 6 Mst. Nasrin Sultana 18-206 Group NO: 12
- 4. Friction
- 5. Our Presentation on:Our Presentation on: • Friction Basics • Measuring Friction • Friction and Gases • Friction and Liquids • Friction: Static vs. Kinetic
- 7. Friction BasicsFriction Basics • Friction is the "evil" of all motion. Friction is a Force that holds back the movement of a sliding object. • Move something left, friction pulls right. Move something up, friction pulls down.
- 8. Friction BasicsFriction Basics • It appears as if nature has given us friction to stop us from moving anything.
- 10. Measuring FrictionMeasuring Friction • Measures of friction are based on the type of materials that are in contact. Concrete on concrete has a very high coefficient of friction. • That coefficient is a measure of how easily one object moves in relationship to another.
- 11. Measuring FrictionMeasuring Friction Scientists have discovered that there is even less friction in your joints than in Teflon! It is one more example at how efficient living organisms can be.
- 13. Friction and GasesFriction and Gases • Friction only happens with solid objects, but you do get resistance to motion in both liquids and gases. This doesn't involve sliding surfaces like friction does, but is instead the kind of resistance you get if you try to push your way through a crowd.
- 14. Friction and GasesFriction and Gases • It's a colliding situation, not a sliding one. If the gas is air, this is referred to as air resistance.
- 16. Friction and Liquids • Although liquids offer resistance to objects moving through them, they also smooth surfaces and reduce friction. Liquids tend to get thinner (less viscous) as they are heated.
- 17. Friction and Liquids • Car engines have a lot of moving parts, and they rub on each other. The rubbing produces friction and the result is heat. When oil is added to a car engine, the oil sticks to surfaces, and helps to decrease the amount of friction and wear on the parts of the engine.
- 19. Friction: Static vs. KineticFriction: Static vs. Kinetic Static : If you try to slide two objects past each other, a small amount of force will result in no motion. The force of friction is greater than the applied force. This is static friction.
- 20. Kinetic : If you apply a little more force, the object "breaks free" and slides, although you still need to apply force to keep the object sliding. This is kinetic friction.