SHMHard

Question

The displacement of an object attached to a spring and executing simple harmonic motion is given by x = 2 × 10-2 cos πt metres. The time at which the maximum speed first occurs is

Options

A.0.5 s
B.0.75 s
C.0.125 s
D.0.25 s

Solution

x = 2 × 10-2 cos πt
v = - 0.02π sin πt
v is maximum at t = = 0.5 sec

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