(a(i))[1]
On the graph, the line starts to bend at point P. State the name of point P.
(a(ii))[1]
Use Fig. 2.1 and Fig. 2.2 to find the mass X.
(a(iii))[1]
Given that the gravitational field strength $g$ is $10\,\text{N kg}^{-1}$, calculate the weight of X.
(b)[2]
An identical spring is added alongside the original spring, as shown in Fig. 2.3, and together they support the mass X. State and explain how the extension in Fig. 2.3 compares with the extension in Fig. 2.1.