Ответ:
n(кпд)=Aп/Ас=mgh/Fh
m=Fh*n/gh=Fn/g=215*0,75/15=10,75
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Ответ:
n(кпд)=Aп/Ас=mgh/Fh
m=Fh*n/gh=Fn/g=215*0,75/15=10,75