A technician uses a removable handle to turn the locking shaft of a water-control gate. The shaft starts to turn when the moment reaches 26 N m. The technician can apply a maximum force of 65 N.
The table gives the perpendicular distance from the centre of the shaft to the line of action of the force for two attachment positions.
| Attachment position | Perpendicular distance in cm |
|---|---|
| A | 36 |
| B | 44 |
Calculate the minimum perpendicular distance needed to turn the shaft.
Give your answer in centimetres.
Explain which attachment position allows the technician to turn the shaft using no more than 65 N.
102 exam-style questions on Edexcel GCSE Physics 9.2 Moments, covering 9.2.1 Rotational effects of forces and moments, 9.2.2 The principle of moments, and 9.2.3 Levers and gears. Each one has a worked solution and a mark scheme showing where the marks go.