A technician turns a control handwheel about its central axle. A moment of 18 N m is needed to turn the handwheel. The technician applies a force in the plane of the handwheel, perpendicular to the radius, at a point 0.40 m from the central axle.
Calculate the force the technician needs to apply.
102 exam-style questions on Edexcel GCSE Physics 9.2 Moments, covering 9.2.1 Rotational effects of forces and moments, 9.2.2 The principle of moments, and 9.2.3 Levers and gears. Each one has a worked solution and a mark scheme showing where the marks go.