For a mass executing simple harmonic motion described by

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

Problem

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

, which one of the following gives the initial velocity

v_{0}

t=0

in terms of

A

\omega

and

\phi

? (a)

A\omega\cos \phi

(b)

-A\omega\sin \phi

(c)

A\omega\sin \phi

(d)

-A\omega\cos \phi