Respostas

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2014-02-12T22:10:24-02:00
FN - Peso Homem  = massa homem * gravidade

PH=m*g
PH = 50*10 = 500N

FN - PH = mH * a
FN - 500 = 50*2
FN = 100 + 500

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FN = 600N // Alternativa D
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