# Frictional torque

A uniform solid right-circular cone of mass $$M$$ and radius $$R$$ is kept on a rough horizontal floor (coefficient of friction $$\mu$$) on its circular base. It is spun with initial angular velocity $$\omega_{0}$$ about its symmetry axis. Neglecting toppling effects (if any), find the time after which it stops spinning.


Details and Assumptions:

• Take the moment of inertia of the cone about its symmetry axis as $$I$$.

×