(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A bowling ball made for a child has half the radius of an adult bowling ball. They are made of the same material (and therefore have the same massper unit volume). By what factor is a) mass and b) rotational inertia if the child's ball reduced compared with the adult ball?

2. Relevant equations

I=MR²

(sphere) I=(2/5)MR²

3. The attempt at a solution

I only got to: R(adult) = (1/2)R (child).

PS. the answers to a) reduced by a factor of 8 and b)reduced by a factor of 32

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# Homework Help: HELP - ROTATIONAL INERTIA (no numbers given)

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