Dynamics - Angular motion example 4

Thermodynamics: drive.google.com/file/d/1bFzQ...
Mechanics of Materials: drive.google.com/file/d/1P-pc...
Statics: drive.google.com/file/d/1aYY5...
Dynamics: drive.google.com/file/d/1_JTk...

[@walaaalali3865]

I was struggling to understand this chapter but your explanation makes it so easy. Thank you a lot.