Answer to Question #335374 in Mechanics | Relativity for Gogo

Question

A wheel is rorating in angular speed of 800 r.m on a shaft, whose moment of inertia is negligible. A second wheel initially at rest with twice moment of inertia of the first shaft is coupled to the same shaft.

(a) What is the angular velocity of the combined shaft and two wheels

(b) What is the change in rotational kinetic energy experienced by the system

Answer 1

∆W=420 J.