Two children are sitting on opposite ends of a uniform seesaw of negligible mass. (a) Can the

Question:

Two children are sitting on opposite ends of a uniform seesaw of negligible mass.
(a) Can the seesaw be balanced if the masses of the children are different? How?
(b) If a 35-kg child is 2.0 m from the pivot point (or fulcrum), how far from the pivot point will her 30-kg playmate have to sit on the other side for the seesaw to be in equilibrium?