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Question

A simple pendulum of frequency n is taken up to a certain height above the ground and then dropped along with its support so that it falls freely under gravity. The frequency of oscillations of the falling pendulum will

A
Remain equal to n
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B
Become greater than n
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C
Become less than n
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D
Become zero
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Solution

The correct option is D Become zero
The frequency of a pendulum is given by n = 12πgl Where g is the acceleration due to gravity. A pendulum falling freely is weightless, i.e., the effective gravity is zero. Therefore, its frequency becomes zero and it stops oscillating. Hence the correct choice is (d)

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