Topic Menu

Cyber-chess a chess instruction site

GCSE Questions: Moments and Centre of Gravity

Q4.

A spanner gives a turning effect to undo a nut.

(a) Complete the sentence.

The turning effect of a force is called the moment (or torque) .

(1 mark)

(b) The diagram below shows a spanner being used.

Calculate the spanner's turning effect in newton metres.

Moment = Fd

Moment = 0.20 x 20 = 4 Nm

(3 marks)

(c) Give two ways in which you can increase the spanner's turning effect.

You must not give general answers here but talk in term of this spanner… do not say 'lengthen the spanner' unless you say how that can be done for example by fitting a pipe over the end of it.

Turn the spanner with more force

Hold the spanner further away from the nut

(2 marks)

(Total 5 marks)