The student places the metre rule on the pivot at the 50.0 cm mark. He places an object Q on
the metre rule with its centre at the 90.0 cm mark. He places a load of weight P = 2.0 N on the
metre rule and adjusts the position of the load so that the metre rule is as near as possible to
being balanced.
He measures the distance x from the centre of the load to the pivot.
He repeats the procedure using loads of weight P = 3.0 N, 4.0 N, 5.0 N and 6.0 N. All the
values of P and x are recorded in Table 1.1.
P / N
|
x / cm
|
1 1
x cm
|
2.0
|
40.0
|
|
3.0
|
27.0
|
|
4.0
|
20.0
|
|
5.0
|
15.9
|
|
6.0
|
13.3
|
|