The x-t graph of a particle undergoing simple harmonic motion is shown in the Fig. The acceleration of the particle at t=43sec is :

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332π2 cm/s2

-π232 cm/s2

π232 cm/s2

-3π232 cm/s2

answer is D.

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Detailed Solution

x= sin 2π8t ⇒ a=-ω2x=-2π82× sin2π8×43 =-π216×32=-3π232cm/s2

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