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Question
Suppose your writing table (or desk) is titled a little. A book kept on the table starts sliding down. Draw a diagram to show the direction of force of friction acting on the book.
Suppose your writing table (or desk) is titled a little. A book kept on the table starts sliding down. Draw a diagram to show the direction of force of friction acting on the book.
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Solution
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, as shown in the figure alongside.
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, as shown in the figure alongside.
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