How much energy is needed to raise a 50kg block up from the ground to a height of 5 meters?

The answer to your question is Pe = 2452.5 J

Explanation:

Data

mass = 50 kg

height = 5 m

gravity = 9.81 m/s²

Process

The energy of this process is Potential energy which is proportional to the mass of the body, the gravity and the height of the body.

Pe = mgh

Substitution

Pe = (50) (5) (9.81)

Simplification

Pe = 2452.5 J