A particle moves according to

PHYSICS · Single correct · CBSE · Physics · Oscillations · Oscillations

Problem

x(t)=A\cos(\omega t+\phi)

. It is released from rest at its extreme positive displacement at

t=0

. Which one of the following values of

\phi

is consistent with this condition? (a)

\pi

(b)

-\dfrac{\pi}{2}

(c)

0

(d)

\dfrac{\pi}{2}