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3.4 Moments (A-level only)

3.4 Moments (A-level only)

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Question 30

A uniform rod AE AE\,AE has length 3 m and mass 4 kg. The rod rests horizontally on supports at C C\,C and DDD, where AC=0.5AC=0.5AC=0.5 m and AD=2AD=2AD=2 m.

Figure for question 8

a.

Find the magnitudes of the reactions at C C\,C and DDD.

[3]
b.

A block is placed at E E\,E 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 D D\,D in this limiting position. Use g=9.8g=9.8g=9.8 m s−2^{-2}−2.

[2]
Markscheme

3.4 Moments (A-level only) Questions

  1. A Level
  2. /Maths
  3. /3.4 Moments (A-level only)

53 exam-style questions on OCR A Level Maths 3.4 Moments (A-level only), covering 3.4.1 Moment of a force (A-level only), 3.4.2 Equilibrium of a rigid body (A-level only), and 3.4.3 Moments in static contexts (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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