Levers are a form of simple machine where a rigid bar can pivot, or rotate, on a fixed point. The fixed point where a lever pivots is called the fulcrum.
Levers provide a mechanical advantage to a force that is being exerted. The mechanical advantage of a lever can increase the input force that is being applied to the object and change the direction of the force.
To calculate the mechanical advantage of a lever, divide the distance from the fulcrum to the input force by the distance form the fulcrum to the output force.
Ideal mechanical advantage = distance from fulcrum to input force / distance from fulcrum to output force
If distance from fulcrum to input force is more than distance from fulcrum to output force ,then advantage will more.