SAT Subject Physics Practice Question 62: Answer and Explanation

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Question: 62

9. A simple pendulum swings about the vertical equilibrium position with a maximum angular displacement of 5 and period T. If the same pendulum is given a maximum angular displacement of 10°, then which of the following best gives the period of the oscillations?

C. T
D. T
E. 2T

Correct Answer: C


For small angular displacements, the period of a simple pendulum is essentially independent of amplitude.

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