m=30 кг F=100 H D=0.3 м d=0.09 м η=?
Ап-m*g*π*d Аз=F*π*D
η=Ап/Аз=m*g*d/(F*D)=30*10*0.09/(100*0.3)=0.9 (90%)
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m=30 кг F=100 H D=0.3 м d=0.09 м η=?
Ап-m*g*π*d Аз=F*π*D
η=Ап/Аз=m*g*d/(F*D)=30*10*0.09/(100*0.3)=0.9 (90%)
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