## anonymous 3 years ago The moment of inertia of a body is 3.0 kgm^2. When its angular velocity is 6.0 rad/s, what is its rotational kinetic energy in Joules?

1. anonymous

$I=3$$w=6$$KE_{rotational}=\frac{Iw^2}{2}$ Notice how this is exactly the same as linear KE, but m -> I and v -> w

2. anonymous