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A mass hanging from one end of a spring whose other end is fixed to the...

A mass hanging from one end of a spring whose other end is fixed to the roof, undergoes simple harmonic motion x(t)=2.4sin(0.6t)x(t)=2.4sin(0.6t). Now if the mass is pulled down from its equilibrium position by a distance 2 times its previous amplitude and released at time t=0t=0, its displacement as a function of time is


A.2.4cos(1.2t)2.4cos(1.2t)

B. 2.4sin(1.2t)2.4sin(1.2t)

C. 4.8sin(1.2t)4.8sin(1.2t)

D. 4.8cos(0.6t)4.8cos(0.6t)

E. 4.8cos(1.2t)4.8cos(1.2t)

F. 4.8sin(0.6t)

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