In this problem, we have height and gravity. Thus, we are talking about gravitational potential energy.

Gravitational potential energy:

$\overline{){{\mathbf{U}}}_{{\mathbf{G}}}{\mathbf{=}}{\mathbf{m}}{\mathbf{g}}{\mathbf{h}}}$

1.If an object is raised twice as high, its potential energy will be

A) half as much

B) twice as much.

C) four times as much.

D) impossible to determine unless the time is given.

2. An object lifted 10 meters gains 200 J of potential energy. If the same object is lifted 20 meters, its potential energy gain is

A) half as much.

B) the same.

C) twice as much.

D) four times as much.

E) more than four times as much.

3. A 1000-kg car and a 2000-kg car are hoisted the same distance. Raising the more massive car requires

A) less work.

B) as much work.

C) twice as much work.

D) four times as much work.

E) more than four times as much work.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Work On Inclined Planes concept. You can view video lessons to learn Work On Inclined Planes. Or if you need more Work On Inclined Planes practice, you can also practice Work On Inclined Planes practice problems.