Question
Question: Two spheres of masses 2M and M are initially at rest at a distance R apart. Due to mutual force of a...
Two spheres of masses 2M and M 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 the centre of mass of spheres would be:
A
0 m/s3
B
g m/s2
C
3 g m/s2
D
12 g m/s2
Answer
0 m/s3
Explanation
Solution
Initial acceleration of zero of the system. So it will always remain zero because there is no external force on the system.