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3.3 R: Forces and Newton's laws

3.3 R: Forces and Newton's laws

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Question 11

A light fixture L L\,L is attached to a ceiling beam by a light inextensible cord. A horizontal pulling force of 50 N is applied to the fixture. The fixture is in equilibrium when the cord makes an angle of 15∘ 15^\circ\,15∘ with the vertical.

a.

Find the tension in the cord.

[2]
b.

Find the weight of the light fixture.

[3]
Markscheme

3.3 R: Forces and Newton's laws Questions

  1. A Level
  2. /Maths
  3. /3.3 R: Forces and Newton's laws

139 exam-style questions on AQA A Level Maths 3.3 R: Forces and Newton's laws, covering 3.3.1 Concept of a force and Newton's first law, 3.3.2 Newton's second law, 3.3.3 Weight and motion under gravity, 3.3.4 Newton's third law and equilibrium, 3.3.5 Addition of forces and resultants (A-level only), and 3.3.6 Friction (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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