A non-uniform rod AB AB\,AB has length 6 m and mass 18 kg. A load of mass 10 kg is attached at BBB. The rod is held horizontally by vertical strings at A A\,A and at CCC, where AC=5AC=5AC=5 m. The tension in the string at C C\,C is 20g N.
Find the tension in the string at A A\,A in terms of ggg.
Find the distance of the centre of mass of the rod from AAA.
42 exam-style questions on WJEC A Level Maths 4.10 Moments (A-level only), covering 4.10.1 Moments (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.