$3\mathrm{.}2$ The load cell clamp attached to the end of the rod of Problem $2\mathrm{.}6$ is observed to oscil$-$

late with an amplitude of $0\mathrm{.}1$ cm when attached to a driving mechanism operating at

the rate of $1$ cps $.$ Determine the magnitude of the force imparted by the mechanism.

Use the following data:

$m=20g,k=1\mathrm{.}13{10}^{11}dyn\frac{e}{c}m,=2380ra\frac{d}{sec}=378cps,=1cps,x=0\mathrm{.}1cm$