The picture in Fig. 3.1 shows a man using a metal bar to prise an iron nail out of a piece of wood.
(a(i))[4]
Calculate the moment of this force about the pivot. Include a unit.
(a(ii))[1]
The force applied by the man creates a turning effect (moment) about the pivot. Describe one different example of a force producing rotation.
(b)[1]
Describe how the man can increase the turning effect without increasing the force.
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