Lever has the advantage of the so-called mechanical advantage. Mechanical advantage is the ratio between the load to the force applied or the ratio between the power arm to load arm. Mathematically formulated as follows:
Several tools based on the lever principle works as follows:
a. The fulcrum is located between the loading point and power points, including: pliers, scales, seesaw, scissors.
b. Load point is located between the fulcrum and the point of power, among others: a corkscrew, push carts, hazelnut solver.
c. Power point located between the fulcrum and the load point, among others: tweezers, staples, clamps bread.
c. Power point located between the fulcrum and the load point, among others: tweezers, staples, clamps bread.
