Lever

A lever is a simple machine that consists of a rigid bar, which turns freely about a fixed point called pivot or fulcrum. It is used to lift or move a heavy object.

A lever has three main parts:

i. Effort

ii. Pivot or fulcrum

iii. Load

Effort is the force applied at one end of a lever to overcome a load.

Pivot or fulcrum is the fixed point that rotates a lever.

Load is a weight which is lifted or it is the force overcome by the effort at one end of the lever.