A horizontal beam AB AB\,AB has length 6 m and weight 120 N. Its centre of mass is at the midpoint of the beam. The beam is supported at A A\,A and BBB. A machine of weight 200 N is fixed to the beam 5 m from AAA.
Find the magnitudes of the reactions at A A\,A and BBB.
53 exam-style questions on OCR A Level Maths 3.4 Moments (A-level only), covering 3.4.1 Moment of a force (A-level only), 3.4.2 Equilibrium of a rigid body (A-level only), and 3.4.3 Moments in static contexts (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.