Questions on kinetic friction

Find the direction of kinetic friction force on the block, exerted by the ground.

Find the direction of kinetic friction force on the ground, exerted by the block.

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following four responses Assertion Friction opposes motion of a body. Reason Static friction is self adjusting while kinetic friction is constant.

COMPLETETION TYPE QUESTIONS: The coefficient of kinetic friction is _____ the coefficient of static friction.

If the coefficient of kinetic friction be in above question then the initial acceleration of the crate will be :

Explain static friction and kintic friction Can value of kinetic friction be greater than static friction Explain.

Mark the correct statements about the friction between two bodies - (a) static friction is always greater than the kinetic friction (b) coefficient of static friction is always greater than the coefficient of kinetic friction (c ) limiting friction is always greater than the kinetic friction ( d) limiting friction is never less than static friction

STATEMENT - 1 : If an object is at rest then there should not be any friction on it . STATEMENT - 2: If an object is moving then the friction acting on it has to be kinetic . STATEMENT -3 : If an object is at rest then kinetic friction cannot act on it.