A pendulum bob is suspended from a long string

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Oscillations · Oscillations

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}

(b)

0.17\,\text{N}

(c)

0.085\,\text{N}

(d)

0.68\,\text{N}