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The phase difference between displacement and acceleration of a particle in a simple harmonic motion is :

(1) zero

(2) π rad

(3) 3π/2 rad

(4) π/2 rad
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Best answer
Correct answer is

π rad

Let X=Asin(ωt)
so, a=−Aω2sin(ωt)=Aω2sin(π+ωt)
so, clearly phase difference is π
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