What is the MA of a hydraulic jack with a 1/4-inch pump piston and a 2-inch output piston.

Question

Quizplus · Accepted Answer

The MA (mechanical advantage) of a hydraulic jack is calculated by dividing the area of the output piston by the area of the input piston. 
Therefore, MA = Output piston area ÷ Input piston area 
MA = (π/4) × (output diameter)² ÷ (π/4) × (input diameter)² 
MA = (output diameter)² ÷ (input diameter)² 
MA = 2² ÷ (1/4)² 
MA = 4 ÷ (1/16) 
MA = 64:1 
Therefore, the correct answer is B) 64:1.

What Is the MA of a Hydraulic Jack with a 1/4-Inch