A-LevelPhysicsForces, density and pressureOct/Nov 2020Paper 2 Q26 Marks
(a) State what is meant by the centre of gravity of a body. (b) A uniform wooden post AB of weight 45N stands in equilibrium on hard ground, as shown in Fig. 2.1. [Figure 2.1] End A of the vertical post is supported by the ground. A horizontal wire with tension T is attached to end B of the post. Another wire, attached to the post at point C, is at an angle of 60° to the horizontal and has tension 38 N. The distances along the post of points A, B and C are shown in Fig. 2.1.
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