I can’t believe how some people are arguing about this.
Listen up folks, this will delineate things very clearly for you
Subject A: Bench 225x1
Subject B: Bench 225x2
Estimated 1 rep Max for A: 225; Estimated 1 rep Max for B: 235
B is not “2x” stronger than A, despite the fact he can push the same quantifiable mass 2x instead of 1x.
The difference is only ~10 pounds in their overall productive force & work output.
You will have to look at the ratio between 10 pounds versus the overall mass being pushed, since that is the difference. That is the % increase in strength,which is very low.[/quote]
So you mean that if x energy is needed to move a weight from point a to point b, x2 energy is not needed to move it twice? strong logic
Technically speaking, since the barbell is returning to its original location in both instances, by definition the work accomplished in both is ZERO.
No, you need to use a line or path integral to evaluate work. That means it matters what happens as the force vector moves through space, even though it ends up back at point a.
Also, to apple, we’re not talking about if someone has twice the energy (work) capacity, we’re debating if they are twice as strong. And so we’re back at debating the definition of strong. I don’t think it should be defined in terms of fundamental physical concepts. I think it is the bar weight used on a successful lift, period.
Also I don’t think the concept of “twice as strong” has any meaning. A 200lb bench is nothing compared to a 400lb bench. There needs to be some sort of nonlinear scaling (like logarithmic but not actually a log scale) between 0 and the maximum bench (Mendy’s 715?). [/quote]
The reason i started wondering about this it seems so weird that average people benching 200 lbs got half the strength as someone serious and big enough to bench 400 lbs. There has to be a nonlinear scale of strength, but how does that make sense? obviously if x muscles is needed to move x weight from exact point a to point b the double would be needed to move double the weight or am i missing something here?