Question

Calculate the mechanical advantage of a lever in which effort arm is 80cm and load arm is 4cm.

Answer 1

Effort arm length = 80 cm

Load arm length = 4 cm

Mechanical advantage is defined as the ratio of load to effort or length of effort arm to load arm.

or, Mechanical advantage = effort arm / load arm

or,Mechanical advantage  = 80 / 4

or, Mechanical advantage  = 20

Answer 2

Effort arm length = 80 cm

Load arm length = 4 cm

Mechanical advantage is defined as the ratio of load to effort or length of effort arm to load arm.

or, Mechanical advantage = effort arm / load arm

or,Mechanical advantage  = 80 / 4

or, Mechanical advantage  = 20