ma=T-fтрma=T-mgkT=m(a+gk)T=5*10^2(0.2+0.1)=1.5*10^2(Н)
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ma=T-fтр
ma=T-mgk
T=m(a+gk)
T=5*10^2(0.2+0.1)=1.5*10^2(Н)