Question

From a uniform circular disc of diameter d,a circular hole of diameter $\frac{d}{4}$ and having its centre at a distance of $\frac{d}{6}$ from the centre of the disc is scooped out The shift of centre of mass of the remaining portion is.

Answer 1

A uniform circle of distance across $R/2$ is put over another uniform plate of measurement $R$ of same thickness and thickness.

The peripheries of the two circles contact each other. Find the focal point of mass of the framework.

Refresh: The appropriate response is $3R/20$ from the focal point of bigger circle towards the focal point of the littler plate.