Answer: 605 joules
Explanation:
Potential energy is the energy possessed by a body at rest.
Potential energy = Mass m x Acceleration due to gravity g x height h
In this case,
Mass of crate = 12.6 kg
Acceleration due to gravity = 9.8m/s^2
Height above factory floor = 4.9 metres
P. E = mgh
= 12.6kg x 9.8m/s^2 x 4.9m
= 605.052 = ( 605 joules of energy approximately)
Thus, the potential energy of the crate is 605 joules
