A mechanic uses a spanner to turn a nut. She can apply push P or push Q at the same point on the end of the spanner. The two pushes are the same size.
Push P acts at right angles to the spanner. Push Q acts at an angle to the spanner, but its line of action does not pass through the centre of the nut.
Which statement about the moments of push P and push Q about the centre of the nut is correct?
Both pushes produce the same moment, because they are the same size and act at the same point
Push P produces the smaller moment, because its line of action passes closer to the centre of the nut
Push Q produces the greater moment, because part of push Q also acts along the length of the spanner
Push P produces the greater moment, because its perpendicular distance from the nut to its line of action is greater
124 exam-style questions on AQA GCSE Physics 5.4 Moments, levers and gears, covering 5.4 Moments, levers and gears. Each one has a worked solution and a mark scheme showing where the marks go.