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Question 18

A uniform rod AB AB\,AB has length 9 m and mass 14 kg. The rod rests horizontally on two supports C C\,C and DDD, where AC=1.5AC = 1.5AC=1.5 m and AD=6AD = 6AD=6 m.

Diagram of a horizontal uniform rod AB of length 9 m resting on triangular supports C and D, with AC = 1.5 m and AD = 6 m.

a.

Find the magnitude of the reactions of the support at C C\,C and DDD.

[3]
b.

A block is now placed at B B\,B and the rod is on the point of tilting about DDD. Find the weight of the block.

[3]
c.

Find the magnitude of the reaction at DDD.

[2]
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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