Define – a) Static Friction b) Kinetic Friction.
Answers
##Static friction is the friction that exists between a stationary object and the surface on which it's resting.
##A frictional force occurs when you try to push an object alongside a surface. Once the objects have already started moving, kinetic friction takes over.
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Friction:-
It is a force which oppose the motion or oppose the intension of motion.
❇ Friction is occurs at the point of contact.
❇ The direction of friction is common tangent.
❇ Friction is occur between the two surfaces.
❇ Friction adjust its value automatically and always oppose motion and intension of motion.
Static Friction:−
❇When two objects having more relative motion between two bodies in contact is called Static friction.
❇Static friction doesn't exist by itself.
❇Static friction help us to start the motion or move.
❇For walking on ground or for starting a motion Static friction is necessary.
Kinetic Friction:−
❇ It is the opposing force that comes into play when one body is actually moving over the surface of another body.
In short:- If their is a realtive motion between bodies which is in contact is known as kinetic Friction.
❇ Kinetic Friction help us to stop the motion.
❇ Kinetic Friction is always slightly less than the limiting friction.
❇ Kinetic Friction is also known as dynamic friction.
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