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3.6 Rigid Bodies (A-level only)

3.6 Rigid Bodies (A-level only)

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Question 11

A laboratory balance uses a uniform beam XY XY\,XY of length 0.6 m which is pivoted at its centre.

A circular silicon wafer of diameter 120 mm and mass 80 g is placed on the beam so that its edge is exactly level with the end XXX. A calibration mass of M M\,M grams is suspended from the end Y Y\,Y by a light inextensible string.

The beam rests horizontally in equilibrium.

a.

Find the value of MMM.

[3]
b.

State one assumption you have made about the silicon wafer.

[1]
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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