Physics Question from JEE Main 2026 · 28 January, Shift 2

A flywheel having mass $3\,kg$ and radius $5\,m$ is free to rotate about a horizontal axis. A string having negligible mass is wound around the wheel and the loose end of the string is connected to a $3\,kg$ mass. The mass is kept initially and released. Kinetic energy of the flywheel when the mass descends by $3\,m$ is _____ J. $\left(g=10\,m\,s^{-2}\right)$

% Given Given: $M = 3\,kg, \quad R = 5\,m, \quad m = 3\,kg, \quad h = 3\,m, \quad g = 10\,m\,s^{-2}$