Suppose your writing desk is tiltrd a little .A book kept on it starts sliding down. Show the direction of frictional force acting on it.

Supose your writing desk is tilted a little. A book kept on it starts sliding down. Show the direction of frictional force acting on it.

In which direction the force of friction acts?

A disc spinning clockwise about its axis with angular velocity omega_0 is set on a rough horizontal plane[Fig.]. What si the direction of frictional force at point P and sense of frictional torque ,before pure rolling starts? .

Write an expression for the work done when a force is acting on an object in the direction of its displacment.

Write an expression for the work done when a force is acting on an object in the direction of its displacement.

Read each statement below carefully, and state, with reasons, if it is true or false :- During rolling, the force of friction acts in the same direction as the direction of motion of the CM of the body.