A car park barrier arm is horizontal and balanced about a pivot. The weight of the arm can be ignored. A counterweight exerts a downward force of 750 N at a perpendicular distance of 0.40 m from the pivot on one side. A warning sign on the other side exerts a downward force of 200 N.
Calculate the warning sign's perpendicular distance from the pivot.
124 exam-style questions on AQA GCSE Physics 5.4 Moments, levers and gears, covering 5.4 Moments, levers and gears. Each one has a worked solution and a mark scheme showing where the marks go.