Q.

A rectangular block of mass 5kg attached to a horizontal spiral spring executes simple harmonic motion of amplitude 1 m and time period 3.14 s. The maximum force exerted by spring on block is…. N

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answer is 20.

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Detailed Solution

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In SHM
F=2xFmax=2AFmax=2A=5×2π3.142×1=20N

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