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How long must a simple pendulum be if it is to make exactly one swing per second? (That is, one complete oscillation takes exactly 2.0 seconds.)

asked Nov 7, 2015 in PHYSICS by anonymous

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1 Answer

The simple pendulum makes exactly one swing per second.

One complete oscillation takes .

Therefore, the time period is .

Find the length of the pendulum.

The time period of the simple pendulum is , where is the length of the pendulum and is acceleration due to gravity.

Substitute and in .

.

The length of the pendulum is .

answered Nov 7, 2015 by Sammi Mentor

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