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3.6 Rigid Bodies (A-level only)

3.6 Rigid Bodies (A-level only)

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Question 2
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A non-uniform rod PQ PQ\,PQ is horizontal, has length 6 m and mass 18 kg. The rod is supported by two light inextensible vertical strings attached at P P\,P and RRR, where PR=5PR = 5PR=5 m.

Given that the tension in the string at P P\,P is twice the tension in the string at RRR.

a.

Find the tension in the string at RRR.

[2]
b.

Find the distance of the rod's centre of mass from PPP.

[4]
Markscheme

3.6 Rigid Bodies (A-level only) Questions

  1. A Level
  2. /Maths
  3. /3.6 Rigid Bodies (A-level only)

56 exam-style questions on OCR (MEI) A Level Maths 3.6 Rigid Bodies (A-level only), covering 3.6.1 Moment of a force (A-level only), 3.6.2 Equilibrium of a rigid body (A-level only), 3.6.3 Turning effect of forces (A-level only), and 3.6.4 Weight acting through a point (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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