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Question

For a simple pendulum, a graph is plotted between its kinetic energy (KE) and potential energy (PE) against its displacement d. Which one of the following represents these correctly?

A
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B
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C
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D
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Solution

The correct option is B

A simple pendulum performs simple harmonic motion.
For simple harmonic motion.
Potential energy foes as 12m ω2x2
The maximum potential energy being 12m ω2A2
Kinetic energy does as 12mω2(A2x2). Graph (b) fits these plots.


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