A block, of weight 8 N, is at rest on a rough plane inclined at an angle of 18∘ 18^\circ\,18∘ to the horizontal. The block is on the point of sliding down the plane.
Find the coefficient of friction between the block and the floor.
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.