Heavy duty 60 kg box placed on the seesaw, the distance from the fulcrum. 1.50 m, it must provide the child seat weight 40 kg, the distance from the fulcrum? Planks so it will be in the balance.
Box weighs 60 kg, put on a seesaw from the pivot point of 1.50 meters, weight 40 kg, a child must ride away from the center of rotation much. The plank is in equilibrium.
A heavy box 60 kg on the seesaw away from the pivot point 1.50 meters to children 40 weight kg ride away from the pivot point? The plank is in equilibrium.