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3.4 Moments (A-level only)

3.4 Moments (A-level only)

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Question 25

A uniform rod AB AB\,AB has length 5 m and mass 8 kg. It is supported horizontally by a pivot at PPP, where AP=2AP=2AP=2 m. A particle of mass 5 kg is attached at AAA. A particle of mass m m\,m kg is attached at BBB, and the rod is in equilibrium.

a.

Find mmm.

[3]
b.

Find the magnitude of the reaction at PPP. 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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