Question

Determine the amount of potential energy of a 5 newton book that is moved to three different shelves on a bookcase. The height of each shelf is 1.0 meter, 1.5 meters, and 2.0 meters.

Answer 1

Gravitational Potential Energy = weight x height

for 1 meter:

GPE = 5 x 1
 = 5N

for 1.5 metres:

GPE = 5 x 1.5
 = 7.5N

for 2 metres:

GPE = 5 x 2
 = 10N