A pendulum bob is suspended from a long string and is displaced by

PHYSICS · Subjective · AP · Physics C: Mechanics · Oscillations · Oscillations

Problem

0.50\,\text{kg}

pendulum bob is suspended from a

0.65\,\text{m}

long string and is displaced by

\theta = 0.060\,\text{rad}

, an angle small enough for the small-angle approximation to apply. Calculate the magnitude of the restoring torque about the pivot at this instant.