24. An object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done?

Question

A. 47.75 J

B. 468 J

C. 764.4 J

D. 4,586.4 J

Answer 1

Work done = potential energy

Work done = mgh

where

m = 78 kg (given)

g = acceleration due to gravity = 9.8 m/sec^2 (constant)

h = 6 meters (given)

Substituting values,

Work done = (78)(9.8)(6)

Work done = 4586.4 J

This is Option D in your choices.

Answer 2

D.

Answer 3

W=Epot=mgh=78kg*9.8m/s^2*6m=D