Suppose your writing table (or desk) is tilted 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.
When we try to push a very heavy box kept on the ground, it does not move at all. Which force is preventing this box to move forward? Where does this force act?
A big wooden box is being pushed on the ground from east to west direction. The force of friction due to the ground will act on this box towards _____.
