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    BGirls's Avatar
    BGirls Posts: 1, Reputation: 1
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    #1

    Sep 7, 2008, 08:02 PM
    Inverse Varation
    When a seesaw is balanced, each person's weight varies inversely with the distance from the center support. If a person who weigh 90lbs sits at one end of a 12ft seesaw, how far from the support must a 120lb person sit in order to balance the seesaw?
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    ebaines Posts: 12,131, Reputation: 1307
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    Sep 8, 2008, 02:27 PM
    Saying that the person's weight vairies inversely with the distance to the support is like saying that the person's weight (call it W) times the distance (L) is a constant (C). In other words:



    For two people to be balanced, each person's weight times distance must be equal:



    Here you have the weight and distance for one person, and the weight for the second person, so now you can solve for the distance of the second person.
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