SAT Subject Physics Practice Question 231: Answer and Explanation

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Question: 231

2.

A block of mass m undergoing simple harmonic motion. Frictional forces are negligible and can be ignored.

Which quantity is inversely proportional to the square root of the block’s mass?

A. Amplitude
B. Frequency
C. Period
D. Position of block
E. Total mechanical energy of the block

Correct Answer: B

Explanation:

According to the equation for the frequency of a spring–block simple harmonic oscillator, f = , we see that the frequency is inversely proportional to the square root of m, the mass of the block.

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