In example 34, let us take the position of the mass, when the spring is unstretched, as x=0, and the direction from left to right as the positive direction of X-axis. Give x as a function of time t for the oscillating mass, if at the moment we start the stop watch (t=0), the mass is (i) at the mean position (ii) at the maximum stretched position (iii) at the maximum compressed position.
In what do these different functions of SHM differ ? Frequency, amplitude or initial phase ?