F1=F2=F3=√20 a=2.5 m=?
F12=√(F1²+F2²)=√(20+20)=√40
F=√(F3²+F12²)=√(20+40)=√60
m=F/a=√60/2.5=3.1 кг
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F1=F2=F3=√20 a=2.5 m=?
F12=√(F1²+F2²)=√(20+20)=√40
F=√(F3²+F12²)=√(20+40)=√60
m=F/a=√60/2.5=3.1 кг
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