them a smooth entry into to Example 1.8: A spherical water balloon is revolving at 60 rpm. In the course of time, 48.8 % of its water leaks out. With what frequency will the remaining balloon revolve now? Neglect all non-conservative forces. 3Example 1.9: A ceiling fan having moment of inertia 2 kg-m' attains its maximum frequency of 60 rpm in '2nt' seconds. Calculate its power rating