Lesson: Angular Momentum in Terms of Moment of Inertia High School Physics

If the angular speed of a rotating object increases by a factor of 3, by what factor does the angular momentum of the object change?

An object spinning with an angular speed of rad/s has an angular momentum of kg⋅m²/s. What is the moment of inertia of the object about its axis of rotation?

A hollow metal sphere has a moment of inertia about its axis of rotation of 0.45 kg⋅m² and an angular momentum of 0.79 kg⋅m²/s. How long does it take for the sphere to make one full rotation? Give your answer to 2 significant figures.