Answer:
Explanation:
The gravitational potential energy (U) with respect to the ground can be calculated by ,
Where,
- m is mass of the body
- g is a acceleration due to gravity (9.8 m/s²)
- h is height
According to the question, we have A boy with a mass of 25 kg climbs into a small tree. He sits on a branch that is 2.0 m above the ground.
Mass of the boy (m) = 25 kg
Height (h) = 2.0 m
Substituting the required values in the above formula, we get :
Hence, the gravitational potential energy of the boy with respect to the ground is 490 J
