A see-saw is 3.0 m long and is pivoted at its centre. Child A has a weight of 320 N and sits 1.2 m from the pivot. Child B has a weight of 480 N.
Calculate the moment of the weight of child A about the pivot.
Child B sits on the other side of the pivot so that the see-saw balances. Calculate the distance between child B and the pivot.
Child B then moves 0.20 m further away from the pivot. Describe what happens to the see-saw.
40 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.