N=P=mg=30•10=300Н.Fтр=uN=0.03*300=9Н.F=ma=30*2=60,Fравнодейств.=60-9=51
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N=P=mg=30•10=300Н.Fтр=uN=0.03*300=9Н.F=ma=30*2=60,Fравнодейств.=60-9=51