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Q. Two bodies $A$ and $B$ have masses $M$ and $m$ respectively where $M>m$ and they are at a distance $d$ apart. Equal force is applied to each of them so that they approach each other. The position where they hit each other is:

System of Particles and Rotational Motion

Solution:

Here forces applied should be in opposite directions. So net force is zero. Their centre of mass will remain at rest and finally they will meet at centre of mass. And centre of mass lies closer to M.