• The student places the load P on the metre rule at the 5.0 cm mark.
• She places the metre rule on the pivot at the 45.0 cm mark.
• She places load Q on the rule and adjusts its position so that the metre rule is as near as
possible to being balanced.
• She measures the distance x between the centre of load P and the pivot and the
distance y from the centre of load Q to the pivot.
• She repeats the procedure, placing the load P at the 10.0 cm mark, at the 15.0 cm mark,
at the 20.0 cm mark and at the 25.0 cm mark. The readings are shown in Table 1.1.
Table 1.1
x/
|
y/
|
A/
|
B/
|
40.0
|
42.5
|
|
|
35.0
|
36.0
|
|
|
30.0
|
30.0
|
|
|
25.0
|
24.0
|
|
|
20.0
|
17.5
|
|
|