A see-saw is balanced with a child sitting on each side of the pivot. The child on the left then moves closer to the pivot, and nothing else changes. What happens to the see-saw?
It stays balanced, because the weights of the two children are unchanged
The right hand side goes down, because the clockwise moment is now larger
The left hand side goes down, because the left hand child is nearer the pivot
It stays balanced, because the total distance from the pivot is unchanged
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.