Physics

Problem

A particle executes SHM described by

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

with

\omega=6\pi\,\text{rad}\,\text{s}^{-1}

. What is the first positive time after

t=0

when its kinetic energy equals its potential energy? a)

\dfrac{1}{18}\,\text{s}

\dfrac{1}{24}\,\text{s}

\dfrac{1}{12}\,\text{s}

\dfrac{1}{8}\,\text{s}