question_answer

Two SHM are represented by equations, \[{{y}_{1}}=6\cos \,\,\left( 6\pi t+\frac{\pi }{6} \right),\]\[{{y}_{2}}=3\,(\sqrt{3}\sin 3\pi t+\cos 3\pi t)\]

A) ratio of their amplitudes is 1

B) ratio of their time periods is 1

C) ratio of their maximum velocities is 1

D) ratio of their maximum acceleration is 1.