a ring,solid cylinder ,solid sphere roll down on the same inclind plne they strt from rest which of th e bodies reaches the ground faster???

Asked by tushar goyal | 6th Dec, 2013, 09:40: PM

Expert Answer:

The acceleration depends on the moment of inertia.
 
 
Moment of inertia for the given object, 
 
I ( ring)                = MR2
 
I (solid sphere)     = 2/5 MR2
 
I ( solid cyllinder)  = 1/2 MR2
 
Heigher is the moment of inertia lower is its acceleration.
 
 
I (solid sphere)   <  I ( solid cyllinder)  <  I ( ring)
 
 
Ring will reach to the ground first.


 
I know that the higher the moment of inertia the lower the acceleration

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I know that the higher the moment of inertia the lower the acceleration but how do I prove it?

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Answered by Komal Parmar | 9th Dec, 2013, 01:21: PM

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