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10 QA on periodic motion and S H M | Learn Physics

10 Question-Answer on periodic motion and S.H.M. 1.        If in the equation y= 5 sin(0.05t + 0.05) , y represents the displacement at the instant t, then which one of the following gives the frequency? (A)    5 (B)    0.05 (C)    0.05/2π (D)    2π × 0.05 Ans: (C) 2.        The displacement of the particle is represented by y = 10 sin (5t + θ). The period of oscillation is: (a)     2π/5s (b)    5/2πs (c)     π/5s (d)    5/πs Ans: (a) 3.        A body is executing S.H.M. When its displacement from the mean position is 4 cm and 5 cm, it has velocities 10 m/s and 8 cm/s respectively. Its periodic time t (a)     π/2s (b)    π s (c)     3π/2 s (d)    2πs Ans: (b) 4.        A particle is simultaneousl...