Q.

s – t graph of a particle in SHM is as shown in figure. Choose the wrong option.

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a

At A particle is at mean position and moving towards positive direction.

b

At B acceleration of particle is maximum and negative.

c

At C acceleration of particle is maximum and in positive direction.

d

At B particle is at extreme position with zero velocity.

answer is C.

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Detailed Solution

At A, particle is in mean position. Hence, displacement is zero, acceleration is zero  and velocity is maximum.At B, particle is in extreme position. Hence, displacement is maximum, acceleration  is maximum directed in negative direction and velocity is zero.At C, particle is in mean position. Hence, displacement is zero, acceleration is zero  and velocity is maximum.
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