(a(i))[2]
Calculate $t_{av}$, the mean of $t$. Give your answer to 1 decimal place.
(a(ii))[1]
The duration of one full swing is known as the period $T$. Calculate $T$.
(a(iii))[2]
The student has a reaction time of about $0.2\,\text{s}$. Explain why the student measures the time for ten swings instead of the time for one swing.
(b(i))[1]
Complete the table with your answer to (a)(ii).
(b(ii))[4]
On Fig. 2.3, on page 5, draw the graph of $T / \text{s}$ against $N$ with $T$ on the y-axis and $N$ on the x-axis. Begin your axes at $(0,0)$. Sketch a smooth best-fit curve.
(b(iii))[1]
Describe the relationship between $T$ and $N$.
(b(iv))[1]
Use your graph to estimate the value of $T$ when 5 paperclips are used. Indicate on your graph how you found your answer.
(c)[1]
Suggest one effect of using paperclips that are not identical.