Chapter 11, Problem 16A

Is the gravitational potential energy more, less, or unchanged when the CG of an object is raised?

To determine

Whether the gravitational potential energy be more, less, or unchanged when the CG of an object is raised.

Answer to Problem 16A

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Explanation of Solution

Introduction:

Center of the gravity, also known as center of mass, is the position where the weight of the object is assumed to be concentrated.

Now if the CG of the object is raised, then its height will be changed which will increase the gravitational potential energy since

  $\text{Gravitational potential energy }\propto \text{ height}$

Conclusion:

Hence, the gravitational potential energy of the object for the considered case will increase.