Hi all, I'm trying to get my head round how to apply newtons laws and an exercise like a bench press, probably a bit simple to what you guys are used to. I want to make it as simple as possible to understand what forces would be acting during the eccentric phase of an exercise, I.e lowering the barbell during a bench press. Rather than viewing it as a moment I want to view it as an object moving vertically at a constant speed. So say you lower a 50K dumbell over a 3 second period, lets suppose you move it 0.6 metres. means it's travelling at 0.2 m/s now if it's moving at a constant speed, the forces should be equal, which means you'd be pushing up at 50K, but if that was the case, how would it be lowering in the first place. THink I'm just looking at it from the wrong angle. Anyways any help would be really appreciated, if anyone would be willing to chat on MSN it would be much appreciated. Regards Zach.