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What is the condition for pure rolling ?...

What is the condition for pure rolling ?

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In pure rolling, for all the points on the edge, the magnitudes of `v_("TRANS")` and `v_("ROT")` are equal `(v_("TRANS")=v_("ROT")`. As `v_("TRANS")=v_(CM)` and `v_("ROT")=R omega`, in pure rolling we have
`V_(CM)=Romega`.
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