A "teeter-totter" (or "see-saw" if you prefer) has a 22.68 kg child sitting at one end, 3.05 m from the center pivot point (fulcrum).How far from the center point should a 56.70 kg adult sit in order to balance the teeter-totter?
A)0.76 m
B)1.22 m
C)1.98 m
D)3.05 m

Question

Quizplus · Accepted Answer

To balance the teeter-totter, the moments on either side of the fulcrum must be equal. The moment is calculated as the product of mass and distance from the fulcrum. Therefore, 22.68 kg * 3.05 m = 56.70 kg * distance. Solving for distance gives 1.22 m.

A "Teeter-Totter" (Or "See-Saw" If You Prefer) Has a 22