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2.3 Forces and Newton's laws

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Question 26

A block of mass 5 kg rests on a rough horizontal floor. The coefficient of friction is 0.3. A horizontal force of magnitude P P\,P N is applied. Take g=9.8g=9.8g=9.8 m s−2^{-2}−2.

a.

Find the greatest value of P P\,P for which the block remains at rest.

[3]
b.

Find the actual friction force when P=10P=10P=10 N.

[1]
Markscheme

2.3 Forces and Newton's laws Questions

  1. A Level
  2. /Maths
  3. /2.3 Forces and Newton's laws

136 exam-style questions on CCEA A Level Maths 2.3 Forces and Newton's laws, covering 2.3.1 Forces and Newton's laws, 2.3.2 Forces and Newton's laws, 2.3.3 Forces and Newton's laws, 2.3.4 Forces and Newton's laws, 2.3.5 Forces and Newton's laws, 2.3.6 Forces and Newton's laws, 2.3.7 Forces and Newton's laws, 2.3.8 Forces and Newton's laws, 2.3.9 Forces and Newton's laws, 2.3.10 Forces and Newton's laws, 2.3.11 Forces and Newton's laws, 2.3.12 Forces and Newton's laws, and 2.3 Forces and Newton's laws. Each one has a worked solution and a mark scheme showing where the marks go.

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