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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 37

Use g=9.8g = 9.8g=9.8 m s−2^{-2}−2.

Two blocks PPP, of mass 5 kg, and QQQ, of mass 3 kg, rest in contact with each other on a rough horizontal floor.

A horizontal force of magnitude 40 N is applied to PPP, pushing both blocks along the floor. The coefficient of friction between each block and the floor is 0.2.

a.

Find the acceleration of the blocks.

[3]
b.

Find the magnitude of the force exerted by P P\,P on QQQ.

[3]
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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