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Question

What is work done by the force of tension(T) in the string of a simple pendulum?

A
TL4
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B
TL2
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C
TL
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D
Zero
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Solution

The correct option is D Zero
Let T be the tension in the string and tension is always a pulling force



Work done is always zero, as displacement of bob of simple pendulum is always perpendicular to the string or the direction of tension of the pendulum.

Hence option D is the correct answer

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