7. A 60 kg mother and her 25 kg child sit on the ends of a 3m, 80 kg see-saw. The see-saw itself is symmetric, so that its center of gravity is at its midpoint. 3 m A) If the mother and child are perfectly balanced on the see saw, how far from the child is the fulcrum pushing upwards on the see-saw? B) What force does the fulcrum push up with? aut STE

7. A 60 kg mother and her 25 kg child sit on the ends of a 3m, 80 kg see-saw. The see-saw itself is symmetric, so that its center of gravity is at its midpoint. 3 m A) If the mother and child are perfectly balanced on the see saw, how far from the child is the fulcrum pushing upwards on the see-saw? B) What force does the fulcrum push up with? aut STE