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Forces and Friction

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Question 48

A brick of weight 10 N lies on a rough plane inclined at an angle of 30∘ 30^\circ\,30∘ to the horizontal. A force of 11 newtons acts on the brick acting up the plane and the brick is in equilibrium on the point of slipping up the plane.

A grey brick rests on a plane inclined at 30° to the horizontal, with an 11 N force arrow directed up the plane.

a.

Find the magnitude of the limiting friction acting on the brick

[2]
b.

Find the coefficient of friction between the brick and the plane

[3]
c.

The 11 N force is removed. Determine whether or not the brick moves

[3]
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