Question

What is the gravitational potential energy of a book with a mass of 0.30 kg on a 1.0 m high desk?

Answer 1

Answer:

Potential energy, PE = 2.94 joules

Explanation:

Given that,

Mass, m = 0.3 kg

It is placed at a height of, h = 1 m

We need to find the gravitational potential energy of the book. It is given by :

PE = mgh

$PE=0.3\ kg\times 9.8\ m/s^2\times 1\ m$

PE = 2.94 Joules

So, the potential energy of the book at this height is 2.94 Joules. Hence, this is the required solution.

Answer 2

2.941955 J of energy I think