A physical pendulum of mass $m=9\mathrm{.}24kg$ is comprised of an odd shape that has a centre$-$of$-$mass a distance of $d=0\mathrm{.}975m$ from the pivot point. The pendulum is displaced from equilibrium to $-14\mathrm{.}95$ and released from rest at $t=0s,$ and at $t=0\mathrm{.}936s$ the pendulum has reached $14\mathrm{.}95$ for the first time.

What is the rotational kinetic energy of the pendulum at time $t=1\mathrm{.}647s?$

$J$