are whammy bars supposed to be hard to push down, so that its very difficult to get the right whammy tone? if not then how would i loosen mine?
what guitar are you using?
If it is a floyd rose trem, it makes the "whammy" sound to the touch, if it is a fender style, yes, it will take more force.
whats your geetar
depends on what you're trying to do, if it's a vibrato, you aren't gonna move it much, just kinda wiggle it.. if you want divebombs you don't use a whammy bar, you use a floyd rose
what guitar/type of trem is it?