Ответ:
F=500H
Объяснение:
дано
m=225kg
h=20cm=0.2m
ККД=90%
d1/d2=1/5
_____________________
ККД=(Ak/Ap)*100; Ap=Ak*100/ККД; Ak=mgh=225*10*0.2=450Дж;
Ap=450*100/90=500Дж
d1/d2=h1/h2; h1/h2=1/5;h2=h1*5=0.2*5=1m
Ap=F*h2=500; F=500/h2=500/1=500H
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Ответ:
F=500H
Объяснение:
дано
m=225kg
h=20cm=0.2m
ККД=90%
d1/d2=1/5
_____________________
ККД=(Ak/Ap)*100; Ap=Ak*100/ККД; Ak=mgh=225*10*0.2=450Дж;
Ap=450*100/90=500Дж
d1/d2=h1/h2; h1/h2=1/5;h2=h1*5=0.2*5=1m
Ap=F*h2=500; F=500/h2=500/1=500H