A mass of 225 grams is attached to the end of a spring that is stretched 360 cm by a force of 4 N. At time t = 0 the mass is pulled 0.5 meters to the right, stretching the spring, and set in motion with an initial velocity of 3 m/s to the left. Find the resulting displacement x(t) of the mass in the form x(t) = C cos(a)ot a), the amplitude and the period of the motion of the mass. (Give all of your answers in units of kg, m and s, and assume that there is no friction.) x(t)=C]cos([:]tD) (Ensure that the phase shift in your answer is a number between 0 and 27:) amplitude = C] period = E]