Question

A wheel is rotating about a its own axis. The moment of inertia of the wheel about
axis of rotation. If its angular speed is 30 rad/sec and its kinetic energy is 300 J (in
kg-m)
(1) 1
3
(2) 2
3
(3)
14
5
(4) 0.6​

Answer 1

Answer:

Moment of inertia of the wheel about axis of rotation 0.6 kgm⁻²

Explanation:

Kinetic energy  $KE= \frac{1}{2} Iw^{2}$=300J

                                  $\frac{1}{2}*I*300^{2} = 300\\\\I=\frac{300*2}{300^{2} }$

                                     =0.6kgm⁻²