Friction is the force exerted by the surface of an object when another object moves against it. Apr 19, 2020 ppt friction class 8 notes edurev is made by best teachers of class 8. Friction increases when the force between two objects is increased. Rubbing two different materials together, a process known as charging by friction aka charging by rubbing, is the simplest way to give something a charge. Until now in physics, youve probably been ignoring friction to make things simpler. Direction is opposite the objects sliding direction and is parallel to the contact surface. Friction introduction friction is a force that opposes the relative motion between two surfaces of objects in contact. The resources can be used as an entire lesson or pulled out for use separately. Types of friction to reduce the amount of friction, apply a lubricant between two surfaces. Friction basicsfriction basics friction is the evil of all motion. Anytime two objects rub against each other, they cause friction. Ppt forces and friction powerpoint presentation free.
Friction can also be reduced by rolling, rather than pushing, an object. Friction is a force that holds back the movement of a sliding object. Examples pushing an object dresser, sledding, brakes, chalk. Results in lower frictional resistance easier to keep something sliding than to start it. The weight of the object and the type of surface it moves over determine the amount of sliding friction present between the two objects. Friction a force that opposes motion and acts in a direction opposite to the motion of the moving object friction will cause a moving object to slow down and. Friction is the resistance to motion of one object moving relative to another. Affecting friction friction increases as surfaces are made rougher. Friction is a force that resists motion of sliding or rolling of one object moving relative to another. This quiz and worksheet combination will check your understanding of the features and effects of friction. It is not a fundamental force, like gravity or electromagnetism. The force of friction always acts in a direction opposite to that of the applied force. Gravitational force ppt includes i do, we do, and you do see notes on ppt slides for suggested.
For example, if you are hiking in the woods, there is static friction between your. Friction basicsfriction basics it appears as if nature has given us friction to stop us from moving anything. Presentation on friction static, kinetic and coefficient of frictio. Remote work advice from the largest allremote company. We find and use it everywhere and every day whenever objects come into contact with each other. Friction is the resistance of motion when one object rubs against another. Friction occurs in the direction opposite to motion, and because of this, it is a force that affects. This document is highly rated by class 8 students and has been viewed 7814 times. It is a result of the electromagnetic attraction between the charged particles of two touching surfaces.
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