(a)[3]
Describe how you would determine the centre of mass of the piece of wood in Fig. 5.1. A diagram may be included if it helps your answer.
(b)[1]
Fig. 5.2 shows a flat, symmetrical object. Indicate its centre of mass by placing X in the correct position.
(c)[2]
Fig. 5.3 shows a side-on view of a drinking-glass in two positions, A and B. State which position, A or B, is more stable. Explain your answer.