This problem states that a mass m is attatched to a spring with spring constant k and is pulled aside a distance A from its equilibrium position x=0. a) what is the speed as it passes the position x=0? I know that at A and -A v=0 and at x=0 v=max, but I can't remember how to get an equation for what that max is! b)what is the net force on the mass at position x=A? would this be F=-kA? c)what is the speed when x=A/4? i don't have any idea how to do this, but i think once i get part a i will understand any help would be greatly appreciated!