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A hollow cylinder with inner radius R, outer radius 2R and mass M is rolling with speed of its axis v.what is its kinetic energy?

A hollow cylinder with inner radius R, outer radius 2R and mass M is rolling with speed of its axis v.what is its kinetic energy?
 

Grade:12th pass

3 Answers

Eshan
askIITians Faculty 2095 Points
5 years ago
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Abhimanyu singh
15 Points
5 years ago
Well the above answer is wrong the moment of inertia will be 
1/2m(r1^2 + r2^2)         where  r1=r , r2=2r 
So MOI is 5/2mr^2 
Shubham Singh
15 Points
4 years ago
Since it's a hollow sphere so rings moment of inertia will be considered so moi is m[r1^2+r2^2] 
Now r1=R and r2=2R put these values in kinetic energy formula 

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