A seesaw is initially balanced. A child on the left moves closer to the pivot. The child on the right stays in place. Which change restores balance?
Move the child on the right closer to the pivot.
Remove a weight from the left at the existing seat.
Add a weight to the right at the existing seat.
Move the child on the right further from the pivot.
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.