Question

What is the efficiency of a tractor that has a work output of 300 J and they work input of 400 J

Answer 1

Efficiency is calculated as the ratio of work output to work input, multiplied by 100% to express the value as a percentage.

Efficiency = (Work output / Work input) x 100%
Efficiency = (300 / 400) x 100%
Efficiency = 0.75 x 100%
Efficiency = 75%

Therefore, the efficiency of the tractor is 75%.