Physics

Problem

0.25\,\text{kg}

pendulum bob is suspended from a

0.80\,\text{m}

long string. When the bob is displaced by

4.0^{\circ}

from equilibrium (assume the small-angle approximation), what is the magnitude of the restoring force acting on the bob? a)

0.34\,\text{N}

0.17\,\text{N}

0.085\,\text{N}

0.68\,\text{N}