A 90-kg ceiling light is suspended 4 m above the floor. What is its gravitational potential energy?

The answer to your question is Pe = 3531.6 J

Explanation:

Data

mass = 90 kg

height = 4 m

acceleration due to gravity = g = 9.81 m/s²

Formula

Potential energy = Pe = mgh

Process

Potential energy is the energy of an object due to its position.

1. - Substitution

Pe = (90) (9,81) (4)

2. - Simplification and result

Pe = 3531.6 J

Use the equation P = mgh. (U is the Potential energy, m = the mass in kg, g = gravity, h = height from floor/earth).

The answer would be about 3532 J