(a(i))[1]
State what is meant by the displacement of the mass on the spring.
(a(ii))[1]
Suggest how Fig. 4.2 shows that the mass is not performing simple harmonic motion.
(b(i))[1]
The amplitude of oscillation of the mass may be varied. State the maximum amplitude $x_0$ for which the oscillations are simple harmonic.
(b(ii))[3]
For the simple harmonic oscillations of the mass, use Fig. 4.2 to find the frequency of the oscillations.
(c)[2]
The greatest speed of the mass when it is oscillating with simple harmonic motion of amplitude $x_0$ is $v_0$. In Fig. 4.3, show the variation with displacement $x$ of the velocity $v$ of the mass for displacements from $+x_0$ to $-x_0$.