(Solved): In part 2 of this experiment, the angular acceleration of various objects about a shaft of radius r= ...

In part 2 of this experiment, the angular acceleration of various objects about a shaft of radius $\mathrm{r}=1.15\mathrm{cm}$ will be used to estimate the moment of inertia of those objects. If the angular acceleration of an object is $0.581\mathrm{rad}/{\mathrm{s}}^2$, what is it's moment of inertia when using a hanging mass $(\mathrm{m}=31.4\mathrm{gm})$ ? $\mathrm{I}=$ $\times {\mathrm{kgm}}^2$ Now assume that the object is a solid disc with mass $1484.2\mathrm{gm}$, what is its radius, R? $R=$ $\mathrm{m}$