posted by Anonymous

Three children are trying to balance on a seesaw. The seesaw is 3.9 m long and pivots about a rock at its center. Louie and Laura are already sitting on opposite ends. If Martha weighs 27 kg, where should she sit so as to balance the seesaw?

50kg kid--------------35kg kid
--------- is the seesaw

  1. Damon

    3.9/2 = 1.95
    left of pivot --- right of pivot
    50(1.95) = 27 x + 35(1.95)

    27 x = 15(1.95)

    x = 15(1.95)/27 to the right of pivot

  2. Kier


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