m=80 кг F=40 H μ=?
===
F=Fтр
Fтр=μ*Т=μ*m*g
μ=F/(m*g)=40/(80*10)=0.05
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m=80 кг F=40 H μ=?
===
F=Fтр
Fтр=μ*Т=μ*m*g
μ=F/(m*g)=40/(80*10)=0.05
===============================