An exercise machine contains a rigid lever that can rotate about a pivot. Two downward forces act on opposite sides of the pivot.
| Force | Direction of moment | Given information |
|---|---|---|
| force from a cable on the left-hand side | anticlockwise | moment = 24 Nm |
| force applied by the user on the right-hand side | clockwise | perpendicular distance from the pivot = 0.40 m |
The lever is initially balanced.
Give the equation that links moment, force and perpendicular distance from the pivot.
Calculate the force applied by the user when the lever is balanced.
The user increases the force by 15 N without changing where the force is applied. Calculate the new clockwise moment.
State what happens to the lever immediately after the force is increased.
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.