A $1\mathrm{.}25kg$ pendulum bob is attached to a $2\mathrm{.}50m$ long string. The pendulum is pulled sideways until the string makes an angle of $15\mathrm{.}0$

with the vertical. What is the restoring force acting on the pendulum?

A$.3\mathrm{.}17N$

B$.2\mathrm{.}91N$

C$.3\mathrm{.}29N$

D$.2\mathrm{.}64N$

A $2\mathrm{.}55kg$ pendulum bob is attached to an $85\mathrm{.}0cm$ long string. The pendulum is pulled sideways until the restoring force acting on the

pendulum is $5\mathrm{.}50N.$ What angle does the string make with the vertical?

A$.11\mathrm{.}4$

B$.12\mathrm{.}4$

C$.11\mathrm{.}9$

D$.12\mathrm{.}7$