Question:
Two blocks $\mathrm{A}$ and $\mathrm{B}$ of mass $\mathrm{mA}$ and $\mathrm{mB}$ respectively are kept in contact on a frictionless table. The experimenter pushes the block A from behind so that the blocks accelerate. If the block A exerts a force $F$ on the block B, what is the force exerted by the experimenter on A?
Solution:
