Physics Question from JEE Main 2023 · 30 January, Shift 2

A uniform disc of mass $0.5 \, \text{kg}$ and radius $r$ is projected with velocity $18 \, \text{m/s}$ at $t = 0$ on a rough horizontal surface. It starts off with a purely sliding motion at $t = 0$. After $2 \, \text{s}$, it acquires a purely rolling motion (see figure). The total kinetic energy of the disc after $2 \, \text{s}$ will be ..... J (given, coefficient of friction is $0.3$ and $g = 10 \, \text{m/s}^2$).