Question

A 123 N crate with a mass of 12.6 kg is sitting on a shelf that is 4.9 m above the factory floor. What is the potential energy of the crate? Show all 3 steps. Be sure to include your units for each step and for your final answer.

Answer 1

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