A particle simple harmonic motion completes `1200` oscillations per minute and passes through the mean position with a velocity `3.14 ms^(-1)`. Determine displacement of the particle from its mean position. Also obtain the displacement equation of the particle if its displacement be zero at the instant `t = 0`.

Answer

B, D

Explanation

The maximum velocity of the particle at the mean position
`v_(max) = Aomega = A(2pin)`
`rArr A = (v_(max))/(2pin) = (3.14)/(2 xx 3.14 xx 20) = 0.025 m`
If at the instant t = 0, displacement be zero so displacement equation is
`y = Asinomegat = Asin2pint = 0.025 sin (40pit) m`