Question

19. The formula for the inertia of a rotating disc isme, where Iis inertia, ris the radius of the disc, and m is the mass. Which formulacan be used to determine r, given m and I?

Answer 1

The formula for inertia given by the problem is :

`I=(1)/(2)mr^2`

Now given that I and m are provided, the formula in getting the value of r will be :

`2I=mr^2`
`r^2=(2I)/(m)`
`r=\sqrt[]{(2I)/(m)}`

That's the answer