Question

A 15.0 Kg object is moved from a height of 7.00 m above thefloor to a height of 13.0 m above the floor. What is the change ingravitational potential energy?

Answer 1

To solve this problem we will apply the concepts related to potential gravitational energy. This is defined as the product between mass, acceleration and change in height and can be expressed as,

$\Delta PE = mg \Delta h$

Here,

m = Mass

g = Gravitational acceleration

$\Delta h$ = Height

Replacing with our values we have,

$\Delta PE = (15kg)(9.81m/s^2)(13m-7m)$

$\Delta PE = 882.9J \approx 883J$

Therefore the change in gravitational potential energy is 883J.