Lesson: Gravitational Potential Energy

In this lesson, we will learn how to calculate changes in the energy of an object in a gravitational field using the definition of the gravitational potential energy, E = mgh.

Video

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Sample Question Videos

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Worksheet: 10 Questions • 4 Videos

Q1:

An object with a mass of 15 kg is at a point 10 m above the ground. What is the gravitational potential energy of the object?

Q2:

The quantity is the vertical displacement of an object from a given position. The quantity is the object’s gravitational potential energy. Which of the following formulas correctly shows the relationship between , , the mass of the object, and the acceleration of the object by gravity?

Q3:

An apple that hangs from a tree branch 4.5 m above the ground has a weight of 1.2 N. What is the apple’s gravitational potential energy?

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