Physics

Physics

Problem

A

1.0\,\text{kg}

block attached to a spring with

k=16\,\text{N\,m}^{-1}

passes through the equilibrium position at

t=0

with velocity

+0.50\,\text{m\,s}^{-1}

(toward

+x

). Taking

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

, the phase constant

\phi

(in radians, confined to

-\pi<\phi\le \pi

) is a)

\dfrac{\pi}{2}

b)

-\dfrac{\pi}{2}

c)

0

d)

\pi

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