two spheres of mass M and 2M are initially at rest at a distance R apart due to mutual force - Physics - Laws Of Motion

Question

two spheres of mass M and 2M are initially at rest at a distance
R apart due to mutual force of attraction they approach each other
when they are at separation R/2 the acceleration of their centre of
mass is?

Hansraj Rai · Accepted Answer

The acceleration of center of mass is zero
Since the motion is due to mutual attraction
the center of mass will not change

two spheres of mass M and 2M are initially at rest at a distance R apart.due to mutual force of attraction they approach each other. when they are at separation R/2 the acceleration of their centre of mass is?