Answer:
18522 J
Step-by-step explanation:
The potential energy of a body can be found by using the formula
PE = mgh
where
m is the mass
h is the height
g is the acceleration due to gravity which is 9.8 m/s²
From the question we have
PE = 63 × 9.8 × 30
We have the final answer as
18522 J
Hope this helps you