Answer:
784,000 J
Explanation:
The gravitational potential energy of a body can be found by using the formula
GPE = 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
GPE = 4000 × 9.8 × 20 = 784,000
We have the final answer as
784,000 J
Hope this helps you
