(a)[2]
State the two conditions that need to hold for an object to be in equilibrium.
(b(i))[2]
On Fig. 2.1, add and label: 1. an arrow showing the force $W$ acting on PQ at the centre of mass 2. an arrow showing the force $R$ acting on PQ at the pivot.
(b(ii))[4]
Using moments about the pivot, calculate $F$.
(b(iii))[2]
Calculate $R$.