Q. A body $A$ of mass $M$ while falling vertically downwards under gravity breaks into two parts; a body $B$ of mass $\frac{1}{3}$ $M$ and a body C of mass $\frac{2}{3}$ $M$ . The centre of mass of bodies $B$ and $C$ taken together shifts compared to that of body $A$ towards
A) Depends on height of breaking
B) Does not shift
C) Body $C$
D) Body $B$
Explanation
(b) Since, the acceleration of centre of mass in both the cases is same equal to g. So, the centre of mass of the bodies $B$ and $C$ taken together does not shift compared to that of body$\ A$.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.