The student repeats the procedure in (b) using d = 60.0 cm, 70.0 cm, 80.0 cm and 100.0 cm.
The readings are shown in Table 1.1.
Table 1.1
d / cm
|
t / s
|
T / s
|
T 2 / s2
|
50.0
|
|
|
|
60.0
|
30.00
|
1.50
|
2.25
|
70.0
|
33.20
|
1.66
|
2.76
|
80.0
|
35.80
|
1.79
|
3.20
|
100.0
|
39.80
|
1.99
|
3.96
|
Plot a graph of T 2 / s2 (y-axis) against d / cm (x-axis). You do not need to start your axes at the origin (0,0).