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Question

A particle performing simple harmonic motion has maximum velocity 8cm/s and has acceleration 16cm/s2 at a distance of 4cm from the mean position. Calculate the time period and amplitude.

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Solution

Given vmax=8ms1 and at y=4cm
f=16cms2
T=?;a=?
Maximum velocity vmax=ω0a or 8=ω0a............(1)
Acceleration f=ω20y
16=ω20×..............(2)
From eq (1) ω0=8a
Substituting this value in eq (2)
16=(8a)2×4=64a2×4
a2=64×416=4×4
a=4cm
ω)0=8a=84=2
or 2πT=2T=π=3.14s

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