The displacement of a particle executing simple harmonic motion is given by

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

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

. Which one of the following expressions represents its instantaneous velocity

v(t)

? (a)

A\omega\sin(\omega t+\phi)

(b)

-A\omega\sin(\omega t+\phi)

(c)

-A\omega\cos(\omega t+\phi)

(d)

-A\omega\sin(\omega t)