A disc with mass moment of inertia (I) and an angular velocity ω rad/s is spinning about the axis of spin. The angular velocity of precession of the axis of spin is (ωp), the torque causing precession will be given by:
1
(Iω2ωp)
2
(Iωωp)
3
\(\left( {\frac{1}{2}I{\omega ^2}{\omega _p}} \right)\)
4
\(\left( {\frac{1}{2}I\omega {\omega _p}} \right)\)