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A fisherman who lives in a high rise apartment building in Toronto, weighs a fish on a spring scale and records a 11.2 N reading. He reweighs the fish while he is in his elevator and records a reading of 13.1 N. What is the acceleration of the elevator at that moment?

  • physics -

    weight = 11.2 N = mg
    => m=11.2/9.8 = 1.143 kg
    new weight = 13.1 = m(g+a)
    a=13.1/1.143-9.8=1.661 m/s²

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