TS EAMCET Medical 11 May 2023 Shift 2 Paper

A horizontal force F pushes a 4‌kg block A which pushes a 2‌kg block B as shown in the figure. The blocks have an acceleration of 3ms−2 to the right. There is no friction between the blocks and the surfaces on which they slide. The net force exerted by the block B on the block A is