Q.
In the given figure, two bodies of mass $m_{1}$ and $m_{2}$ are connected by massless spring of force constant $k$ and are placed on a smooth surface (shown in figure), then
A) The acceleration of centre of mass must be zero at every instant
B) The acceleration of centre of mass may be zero at every instant
C) The system always remains in rest
D) None of the above
Explanation
(a) The resultant force on the system is zero. So, the centre of mass of system has no acceleration
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.