alvesdasilvamariaedu 27/06/2014 F= m*a f₁ + f₂ = 250 m*15 + m*10 = 250 25*m = 250 m = 250/25 m = 10kg
alvesdasilvamariaedu
F= m*a
f₁ + f₂ = 250
m*15 + m*10 = 250
25*m = 250
m = 250/25
m = 10kg