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Homework Statement
Find the moment of Inertial of a hoop at the end of a arm. The axis is at the end of the arm and normal to the plane of the hoop.
Let:
M= mass of the hoop
r= radius of the hoop
m=mass of the arm
d=lengh of the arm
Homework Equations
[tex] I_{hoop} = Mr^2 [/tex]
[tex] I_{arm} = \frac {md^2} 3 [/tex]
[tex]I_{total} = I_{hoop} + I_{arm} [/tex]
The Attempt at a Solution
Using the parallel axis theorm the hoop:
[tex] I_{hoop} = Mr^2 +Md^2[/tex]
so for the system:
[tex]I_{total} = I_{hoop} + I_{arm} [/tex]
Question, is this correct?
Here's the deal, I have created a model of this system, but it is not responding as I think it should, the moment of Inertia is something I need to verify.
No this is not homework for a class, but it is typical of a homework problem so this is where is belongs.