A rough plane is inclined to the horizontal at angle α\alphaα, where tanα=34\displaystyle \tan \alpha = \frac{3}{4}tanα=43. A block of mass m m\,m kg is placed on the plane and released from rest. The coefficient of friction between the block and the plane is 14\displaystyle \frac{1}{4}41
Find the values of sinα \sin \alpha\,sinα and cosα\cos \alphacosα.
Hence find the acceleration of the block.
A different block with mass 2m kg is placed on the same plane. Explain how the acceleration of this block would compare to your answer in part (b).
107 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.