Question

1. Find the rotational kinetic energy of an engine flywheel that revolve at 30 rad/s if the moment of inertia is 4,000 kg.m²

Answer 1

$E=\frac{I\omega^2}{2}=\frac{4000\cdot30^2}{2}=1800000\ (J)=1.8\ (MJ)$ . Answer