Question

What is the potential energy of an apple that is 3m high
and has a mass of 0.5N?

Answer 1

Potential energy = (mass) x (gravity) x (height)

Divide each side by (G x H) : Mass = PE / (G x H)

PE = 6 joules

Gravity = 9.8 m/s

Height = 3 m

Mass = 6 / (9.8 x 3) =

6 / (29.4) = 0.204 kg

(weighs about 2 newtons or 7.2 ounces on Earth)