A uniform rod AB AB\,AB has length 4 m and mass 10 kg. It rests horizontally on supports 0.5 m and 3 m from AAA. A load of mass 20 kg is placed on the rod and is moved slowly from the centre towards BBB.
Find the greatest distance from A A\,A that the load can reach before the rod begins to tilt.
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.