Ответ:
Р=mg
p=F/S=mg/S=P/S
P=p*S=300000*1500/10000=45000H
m=P/g
m=45000/10=4500кг
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Ответ:
Р=mg
p=F/S=mg/S=P/S
P=p*S=300000*1500/10000=45000H
m=P/g
m=45000/10=4500кг