Hello everybody. Me and my (stupid) friend had a little debate. I was wondering how the forces should work in a case as follow: I'm pulling a box using a rope with a certain force. Obviously, the force that the box "feels" is the same as the force im putting in(considering the rope is perfect or whatever). Now lets say I add behind this box another rope connect to a box(same mass as the first box) and pull this whole thing with the same force as before. Obviously the first box will "feel" the same force that I put in, and obviously(for me) the second box would "feel" less than that. My guess was that considering the whole thing is moving at a constant speed(there is some friction for that matter) the force that "gets" to the second box should be half of what I put in. My friend said that both boxes would "feel" the same force which is equal to what I put in. he also said(contradicts himself a bit) that I should look at the whole system as one object and that I cannot know how much force the second box "feels" I hope that you guys would be able to understand what im trying to say here(kinda hard with my limited English and Physics knowledge). all that I want to know basically is what force each of two boxes connect to a rope "feels" in case that I put in a certain force which makes the whole thing move at a constant speed. Thanks in advanced!