1)h水1=m/ρ水/s=1/1000/125*10000=0.08m
h水2=h水1+4.8/100=0.128m
P=ρ水gh水2=1280Pa
2)m/v冰-m/v水=h变*s=P变/ρ水/弯山颤g*s=44.8/1000/10*125/10000=0.56/10000mmm
m=0.504kg
v冰=0.56/埋败1000mmm
v冰+v石=4.8/100*125/10000=6/10000mmm
v石唯困=6/10000-5.6/10000=0.4/10000mmm
ρ平均=(m石+m冰)/(v石+v冰)=ρ水
m石=0.096kg
ρ石=m石/v石=2.4*1000kg/mmm