Question $9$

A solid disk of mass $M=2kg$ and radius $R=0\mathrm{.}5m$ is initially at rest. A constant force $F=10N$ is applied tangentially to the edge of the disk. The disk is free to rotate about its central axis. Find the kinetic energy of the disk after $5$ seconds.

A$.1\mathrm{.}50$ kJ

B$.1\mathrm{.}25$ kJ

C$.3\mathrm{.}00$ kJ

D$.2\mathrm{.}75$ kJ

E$.2\mathrm{.}20$ kJ