Amass of 0.56 kg is attached to a spring and set into oscillation on a horizontal frictionless surface. the simple harmonic motion of the mass is described by x(t) = (0.42 m)cos[(6 rad/s)t]. determine the following. (a) amplitude of oscillation for the oscillating mass m (b) force constant for the spring n/m (c) position of the mass after it has been oscillating for one half a period m (d) position of the mass one-third of a period after it has been released m (e) time it takes the mass to get to the position x = −0.10 m after it has been released