I got and idea...

I was reading something somewhere about how bows are actually simple in "technology" terms. Ok why not change that? And ive got the idea...here goes.

A cam system that is loaded by tension with very little effort. Someway, somehow, idk spring loaded or something... just develop a cam system that you draw maybe 10lbs and it loads the cams to release at 100lbs? 600fps here we come...

Does the concept even make sense?