Condition 2 [2]
(b) Fig.6.1 shows a uniform metre rule PQ in equilibrium.
F
10 cm
40cm
pivot
0.50N
Fig.6.1
The distance PQ is 100cm. The mass of the metre rule is 0.12 kg and its weight is W.
(1) On Fig 6.1, draw and label:
1. an arrow to show the force W acting on PQ at the centre of mass
2. an arrow to show the force R acting on PQ at the pivot.
[2]
(ii) By taking moments about the pivot, calculate F.

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