Number of rotation till the drum comes rest

[Arnav jamale]

Homework Statement

A solid cylinder rotates till it comes to rest. It has inititial angular velocity. To stop the drum a mass m ishung the belt which has a friction coefficient with the drum material as u we have to find no of rotationd all the data is known and correct

Homework Equations

T1=T2(e^u(theta))
Torque equation
NLM equation

The Attempt at a Solution

The attempt is ATTACHed below

 

[Arnav jamale]

Please solve this its a good question and reply as soon as possible