SOLUTION: Mary weighs 45 pounds and sits six feet from the fulcrum of a Seesaw. If Bob who weighs 60 pounds wants to keep the seasaw balanced, how far from the fulcrum must he sit?

Question 1114758: Mary weighs 45 pounds and sits six feet from the fulcrum of a Seesaw. If Bob who weighs 60 pounds wants to keep the seasaw balanced, how far from the fulcrum must he sit?
Answer by ikleyn(52794) (Show Source): You can put this solution on YOUR website!
.

The equilibrium condition on a seesaw is


 = ,


where W is the weight,  d is the distance from the fulcrum and "1" and "2" are indexes.


In your case  45*6 = 60*x,   which gives


x =  = 4.5 ft.

See the lesson
- Using proportions to solve word problems in Physics
in this site.

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