A disc is spinning with an angular velocity? rad/s about the axis of spin. The couple applied to the disc causing precession will be

A disc is spinning with an angular velocity? rad/s about the axis of s

1.	A disc is spinning with an angular velocity? rad/s about the axis of spin. The couple applied to the disc causing precession will be
A.	1/2I <sup>2</sup>
B.	I <sup>2</sup>
C.	1/2 I <sub>p</sub>
D.	I <sub>p</sub>
Answer» E.