Question

A circular disc of radius R is removed from a ** circular disc of radius 2R such that the circumferences of the discs coincide. The centre of mass of the new disc is α/R from the centre of the ** disc. The value of α is

(a) 1/4

(b) 1/3

(c) 1/2

(d) 1/6.

Answer 1

The correct answer is:

The question should be at a distance αR and not
α/R.