It is interesting that centrifugal force is what gives the blades the strength to lift the aircraft. If you went to a stationary chopper and tried to lift it via the blades, they would bend right outa shape, but spinning around gives them strength. The vectors sort themselves out in beautiful style - the lift vector acting at 90 degrees from the blade, making it cone up, and the centrifugal force, depending on RRPM, acting straight out from the blade, trying to flatten the cone - the resultant is right along the blade.
A bit like a piece of nylon fishing line cutting through grass on a whipper snipper. Magic.