If a child swinging to and fro on a playground swing stands up, her time for a to-and-fro swing is
A)longer.
B)shorter.
C)unchanged.

Name: If a child swinging to and fro on a playground swing stands up, her time for a to-and-fro swing is A)longer. B)shorter. C)unchanged.
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Question

Quizplus · Accepted Answer

When the child stands up on the swing, the center of mass of the system shifts higher, which decreases the length of the pendulum. As a result, the time for a to-and-fro swing decreases, making the swings shorter.

If a Child Swinging to and Fro on a Playground