Cambridge Secondary (7-9). Stage 8. MCE Science. Workbook - Unit 8: Forces and Motion - Question 25

In this investigation, place a sturdy plank (1–2 metres long) on a fulcrum so it is evenly balanced. Mark evenly spaced points on each side using a metre stick or tape measure. Use weights of known weight. Work in groups.



Re-balance the seesaw by moving one of the weights. Predict what will happen if you replace one weight with a heavier or lighter weight.