Here's a question that I'm pretty sure I know the answer to, but I was talking with a friend earlier and it just made me second guess... So let's say You are a bodybuilder. One day you decide to get on your knees (in a stationary position) and try and push the Earth down. Is the amount of force you exert entirely dependent on how much you weigh or does it matter if you can bench press 3/4/500 pounds? Does muscular strength even matter in this scenario?