Question

4. Suppose your writing desk is tilted a little. A book kept on it starts sliding
down. Show the direction of frictional force acting on it.
unter on a marble floor accidently. Would it​

Answer 1

Answer:

When a book slides on the writing desk, a frictional force acts between the book and the surface of the desk. The direction of frictional force on the book is opposite to the direction of its motion and acts in upward direction,