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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 spin. The couple applied to the disc causing precession will be Correct Answer Iω ωp

Since the rate of change of angular momentum will result by the application of a couple to the disc, therefore the couple applied to the disc causing precession, Iω ωp where I = Mass moment of inertia of the disc, and ωp = Angular velocity of precession of the axis of spin.

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