Two bodies A and B of same mass $m$ are attached with a massless spring and are hanging from a ceiling with a massless rope. They are in same vertical plane but not in same horizontal plane.
Now the string that connected A with the ceiling is cut and the system is experiencing free fall.
1. Is there any tension in the spring?
Now the whole system should descend with the acceleration $g$ and the body B (and also A) experiences a gravitational pull $mg$. Let the tension in the spring be T.
Therefore, from the free body diagram of B, $mg - T = mg$,ie. $T=0$.
But A also moves downwards, so puts a force on B, how to take account of that? Will there be an relative acceleration between A and B? I am confused about the free body diagrams of A and B.
Will the tension change if the mass of A and B are different?