Answers:
a) PE = 1500 J
b) PE = 240 J
Explanation:
The potential energy is calculated as follows
PE = mgh
Where m is the mass, g is the gravity and h is the height.
Now, we can calculate the potential energy in Earth replacing g = 10 m/s², m = 30 kg and h = 5 m, so
PE = (30 kg)(10 m/s²)(5m)
PE = 1500 J
In the same way, the potential energy in the moon with g = 1.6 m/s² is equal to
PE = (30 kg)(1.6 m/s²)(5 m)
PE = 240 J
Therefore, the answers are
a) PE = 1500 J
b) PE = 240 J
