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Question

A pendulum clock in a museum was found to lose 1 minute in every 24 hours. What corrective measure should the curator of the museum undertake?

A
The length of the pendulum should be increased
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B
length of the pendulum should be decreased
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C
the bob should be immersed in water
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D
the mass of the bob should be increased
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Solution

The correct option is A The length of the pendulum should be increased
Time period of the simple pendulum is given by T=2πlg
where l is the length of the pendulum.
Tl
Since the pendulum clock loses 1 minute in every 24 hours, this means that time period of clock gets increased. This can happen if the length of the pendulum gets increased.

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