A seesaw AB AB\,AB of length 10 m is supported by a pivot at its centre. Child C C\,C of mass 24 kg sits on the end at AAA. Child D D\,D of mass 45 kg sits x x\,x m from the centre of the seesaw and the seesaw rests horizontally in equilibrium. The seesaw is modelled as a uniform rod.
Find the value of xxx.
54 exam-style questions on Edexcel A Level Maths Moments, covering 4.1 Moments, 4.2 Resultant Moments, 4.3 Equilibrium, 4.4 Centres of Mass, and 4.5 Tilting. Each one has a worked solution and a mark scheme showing where the marks go.