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Question 14

A non uniform rod AB AB\,AB has length 7 m and mass 18 kg. The rod is supported by two light inextensible strings attached at A A\,A and CCC, where AC=6AC = 6AC=6 m.

A horizontal rod AB of length 7 m is supported by vertical strings at A and C, with C between A and B and AC equal to 6 m.

a.

Given that the tension in the string at A A\,A is twice the tension in the string at CCC, find the tension in the string at CCC.

[2]
b.

Figure 2 shows a horizontal non-uniform rod labelled A, C and B, with upward forces at A and C, a downward weight at its centre of mass, and distance markings below.

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

[4]
Markscheme

Moments Questions

  1. A Level
  2. /Maths
  3. /Moments

54 exam-style questions on Edexcel A Level Maths Moments, covering 4.1 Moments, 4.2 Resultant Moments, 4.3 Equilibrium, 4.4 Centres of Mass, and 4.5 Tilting. Each one has a worked solution and a mark scheme showing where the marks go.

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