A machine has a velocity ratio of 5. It req..

Question 1 Report

A machine has a velocity ratio of 5. It requires a 50kg weight to overcome a 200kg weight. The efficiency is

40%

50%

80%

Answer Details

Efficiency = M.A x 100%

= $\frac{200}{50}$ x $\frac{1}{5}$ x 100

= 80%