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Forces and Friction

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Question 4

A block of mass 2kg is at rest on a rough plane inclined at an angle of θ∘ \theta^\circ\,θ∘ to the horizontal where tan⁡θ=512\displaystyle \tan \theta = \frac{5}{12}tanθ=125​. The block is released from rest. The coefficient of friction between the block and the floor is 14\displaystyle \frac{1}{4}41​.

Diagram for question 5: A block on an inclined plane at angle theta to the horizontal.

a.

Show that sin⁡θ=513\displaystyle \sin \theta = \frac{5}{13}sinθ=135​ and cos⁡θ=1213\displaystyle \cos \theta = \frac{12}{13}cosθ=1312​

[2]
b.

Find the acceleration of the block.

[7]
Markscheme

Forces and Friction Questions

  1. A Level
  2. /Maths
  3. /Forces and Friction

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.

Question bank