Question

Why is a door provided with a handle near its free end?

Answer 1

1. The turning effect of force about a fixed point is known as the moment of force or torque.
2. Moment of force = $Force\mathit{\times }Perpendicular\mathit{}distance\mathit{}between\mathit{}pivot\mathit{}and\mathit{}the\mathit{}point\mathit{}of\mathit{}application\mathit{}of\mathit{}force\mathit{.}$
3. Thus larger the distance from the hinge, the lesser the force will be required to open the door resulting in a more turning effect.

Hence, a door provided with a handle near its free end as minimum force will be required resulting in a more turning effect.