- #1

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I thought this: Rotational KE = (1/2)Iw^2

=(1/2)(second bold number)w^2

Linear KE= (1/2)mv^2

= (1/2)(third bold number)(radius*w)^2 (i.e. plug in r*w for v)

Total KE is equal to Rotational KE + Linear KE

add the two eqns

(1/2)Iw^2/ (some # * w^2)