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4.9 Forces and Newton's laws (A-level only)

4.9 Forces and Newton's laws (A-level only)

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Question 28

A brick of weight 10 N lies on a rough plane inclined at an angle of 30° 30°\,30° to the horizontal. A force of magnitude 12 N acts on the brick up a line of greatest slope. The brick is in equilibrium, on the point of slipping up the plane.

Figure for question 5

a.

Find the coefficient of friction between the brick and the plane.

[4]
b.

The 12 N force is now removed. Determine whether or not the brick moves.

[2]
Markscheme

4.9 Forces and Newton's laws (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.9 Forces and Newton's laws (A-level only)

106 exam-style questions on WJEC A Level Maths 4.9 Forces and Newton's laws (A-level only), covering 4.9.1 Forces and Newton's laws (A-level only), 4.9.2 Forces and Newton's laws (A-level only), 4.9.3 Forces and Newton's laws (A-level only), 4.9.4 Forces and Newton's laws (A-level only), and 4.9.5 Forces and Newton's laws (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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