1.

A sector cut from a uniform disk of radius `12cm` and a uniform rod of the same mass bent into shape of an arc are arranged facing each other as shown in the figure. If center of mass of the combination is at the origin, what is the raius of the arc? A. `8cm`B. `9cm`C. `12cm`D. `18cm`

Answer» Correct Answer - A
Ans.(1)
`(-MRsintheta)/(theta)+(M2xx12)/(3) (sintheta)/(theta)=0,`
where `theta` is half angle `R=8cm`.


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