A child swings to and fro on a playground swing. If the child stands on the swing rather than sitting on it, the time for a to-and-fro swing is
A)lengthened.
B)shortened.
C)unchanged.

Question

Quizplus · Accepted Answer

Standing on the swing raises the child's center of mass, effectively shortening the length of the pendulum, which decreases the period of the swing, thus shortening the time for a to-and-fro swing.

A Child Swings to and Fro on a Playground Swing