Question

A .5kg book sits on top of a student's desk which is 9m high. How

much gravitational potential energy does the book have as it sits on the desk?

Answer 1

441J

Step-by-step explanation:

Given parameters:

Mass of book = 5kg

Height = 9m

Unknown:

Gravitational potential energy = ?

Solution:

The gravitational potential energy of a body is the energy due to the position of the body.

It is given as:

Gravitational potential energy = mass x acceleration due to gravity x height

Gravitational potential energy = 5 x 9.8 x 9 = 441J