A spring with a 6-kg mass and damping constant can be held stretched 5 meters beyond its natural length by a force of 7.5 newtons. Suppose the spring is stretched x meters beyond its natural length and then released with zero velocity. In the notation of the text, what is the value of 4mk? m?kg?/sec? Find the position of the mass, in meters after t seconds. Your answer should be a function of the variable with the general form C * e^(at) * cos(bt) + G * e^(at) * sin(bt).