A sledge of mass 15 kg is at rest on a rough horizontal patch of ice. The coefficient of friction between the sledge and the ice is 0.2. A child pulls the sledge with a force of F F\,F N at an angle of 30∘ 30^\circ\,30∘ to the horizontal. The sledge is on the point of sliding.
Find the value of FFF.
108 exam-style questions on Edexcel A Level Maths Forces and Friction, covering 5.1 Resolving Forces, 5.2 Inclined Planes, and 5.3 Friction. Each one has a worked solution and a mark scheme showing where the marks go.