Question

Two semicircular rings of linear mass densities 1 and 31 and of radius R each
are joining to form a complete ring. The distance of the centre of the mass of
complete ring from its geometrical centre is :-
(1) 2R/3π
(2) R/π
(3 2R/π
(4) R/3π​

Answer 1

Explanation:

Correct option is

B

3π

2R