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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.
Q1:
A bird flying over the sea has a weight of 15 N and has a constant 765 J of gravitational potential energy. How far above the sea does the bird fly?
Q2:
An apple that hangs from a tree branch 4.5 m above the ground has a weight of 1.2 N. What is the appleβs gravitational potential energy?
Q3:
The quantity β is the vertical displacement of an object from a given position. The quantity πΈ is the objectβs gravitational potential energy. Which of the following formulas correctly shows the relationship between β , πΈ , the mass of the object, and the acceleration of the object by gravity?
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