The displacement - time (x−t) graph of a particle executing simple harmonic motion is shown in figure. The correct variation of net force F acting on the particle as a function of time is
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 Given graph represents x=A cos ωt
Since, the particle executes simple harmonic motion, F∝−x ∴F=−KA cos ωt
Hence, option (b) is correct.