A uniform beam AB AB\,AB of length 10 m and mass 20 kg is used as a ladder. End A A\,A is on rough horizontal ground and the beam rests in limiting equilibrium against a smooth horizontal rail at point CCC, where AC=8AC = 8AC=8 m. The beam is inclined to the horizontal at an angle α\alphaα, where tanα=15/8\tan \alpha = 15/8tanα=15/8. The coefficient of friction between the beam and the ground is μ\muμ.
Find the value of μ\muμ.
Practise Edexcel A Level Maths Friction and Static Particles with exam-style questions for A Level Maths. 3 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
