A hoop of mass 500g and radius 10cm is placed on a nail. Find the moment of inertia of the hoop when it is rotated about the nail.

A hoop of mass 500g and radius 10cm is placed on a nail. Find the mome

1.	A hoop of mass 500g and radius 10cm is placed on a nail. Find the moment of inertia of the hoop when it is rotated about the nail.
Answer» SOLUTION :When the hoop is rotated about the NAIL, the axis of rotation is the tangent PERPENDICULAR to its plane. Its moment of INERTIA `I=2MR^(2)=2xx0.5xx(0.1)^(2)=0.01kgm^(2)`