1.

A particle is executing a motion in which its displacement as a function of time is given by \[x=3\,\sin \,(5\pi t+\pi /3)+cos(5\pi t+\pi /3)\]where \[x\] is in \[m\] and \[t\] is in s. Then the motion is

A.  Simple harmonic with time period 0.2 s
B.  Simple harmonic with time period 0.4 s
C.  Simple harmonic with amplitude 3 m
D.  Not a simple harmonic but a periodic motion
Answer» C.  Simple harmonic with amplitude 3 m


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