How are some people more muscular than others at the gym?
Have you noticed how some people in the gym are much buffer than others? It is obvious that they work out harder, but what does it really mean when it comes to physics?
1. In looking at everyone who lifts weights at the gym, what is different about the work done by the buffer people?
2. How do they increase their work? Why?
3. There is a 150 lb. weight on the bench press. How much work does it require to lift the weight up half a meter? (Be careful: convert measurement into SI units first!)