## Moment of Inertia

Circle moment of inertia Find the principal moments of inertia of a circle of radius $R$ and mass $m$. Use the integration over the circle length. (Hint: first define the infinitesimal moment of inertia). The inertia moment is a measure of how a body that has certain dimensions, opposes to changes in rotation motion, exactly

## Inertia Moment (Homework 3-103)

1. A hollow sphere (M = 3 kg, R = 60 cm) is rolling down an inclined surface with a height of 2.0 meters and an inclined angle of 25 degrees.a) find the moment of inertia of the sphere.b) find the speed of the center of the mass when it reaches the bottom of the