Two blocks of mass 2 kg and 4 kg are kept in contact with each other on a smooth horizontal surface. A horizontal force of 12 N is applied on the first block due to which they move with certain constant acceleration. Calculate the force between the blocks.
A block of mass 3 kg in contact with a second block of mass 2 kg rests on a horizontal frictionless surface . A horizontal force of 10 N is applied to push the first block. The force with which the first block pushes the second block is: