(a)[2]
Explain how Fig. 4.2 indicates that the block’s oscillations are simple harmonic.
(b(i))[1]
Deduce an expression, using some or all of $m$, $A$ and $Y$, for the angular frequency $\omega$ of the oscillations.
(b(ii))[2]
Deduce an expression, using some or all of $m$, $A$ and $Y$, for the maximum speed $v_0$ of the oscillations.
(b(iii))[2]
Deduce an expression, using some or all of $m$, $A$ and $Y$, for the energy $E$ of the oscillations.
(c)[2]
The period is $0.75\,\text{s}$ and $3Y$ has the value $1.8\,\text{cm}$. Find an equation for $x$ in terms of time $t$, with $x$ measured in cm and $t$ measured in seconds.