Problem: Three blocks are arranged in a stack on a frictionless horizontal surface. The bottom block has a mass of 37.0 kg. A block of mass 18.0 kg sits on top of it and a 18.0 kg block sits on top of the middle block. A downward vertical force of 170 N is applied to the top block.
Part A: What is the magnitude of the normal force exerted by the bottom block on the middle block?
I need help to find the magnitude of the normal force exerted by the bottom block on the middle block.