## Question:

A particle is moving along a circular path having a radius of 6 in. such that its position as a function of time is given by $\theta$ =$\sin { 3t }$, where $\theta$ is in radians, the argument for the sine are , and t is in seconds. Determine the acceleration of the particle at $\theta$ =30°. The particle starts from rest at $\theta$ =0°.