23. The flywheel of a uniform drive, the moment of inertia is J = 245 kg • m2 rotates at n = 20 s-1. After a time t = 1 minute after ceased to act on the wheel torque M is stopped. Find friction torque of materials and the number of turns N, which has made the wheel to a stop after the termination of the force.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)