Question

# A roller coaster is at the top of a 72 m hill and weighs 966 N. What is its gravitational potential energy?

- 69552 J
- 69.552 J
- 69552 kJ
- 695.52 J

Hint:

### If the height of the roller coaster is 72 m, and the weight is 966 N, the GPE is 69552 J.

## The correct answer is: 69552 J

- The formula that is used to calculate gravitational potential energy is GPE=mgh.
- h = 72 m and mg = 966N

GPE= mgh

= 966 72

= 69,552J

The energy that an object has or acquires when its position changes due to being in a gravitational field are known as gravitational potential energy. Gravitational potential energy can be defined as energy that has a connection to gravitational force or gravity.

Gravitational potential is the effort required to move a unit test mass from infinity into the source mass's gravitational field. Both are held above the table, with one at the table. We can now state that the pencil that is higher than the table will have more gravitational potential energy.

¶The formula for Gravitational Potential Energy

⇒ GPE = m⋅g⋅h

where

m represents the mass in kilograms.

Gravitational acceleration, or g (9.8 on Earth)

The measurement of h above the ground is in meters.