1.F浮=G-F=8N-5.5N=2.5N
V=F/pg=2.5N/(1.0*10^3kg/m^3*10N/kg)=2.5*10^-4m^2
2.p石=m/V=(8N/10N/kg)/2.5^-4m^2=3.2*10^3kg/m^2
3.p液=F/gv=(8N-6N)/(2.5^-4m^2*10N/kg)=0.8*10^3kg/m^2
1.F浮=G-F=8N-5.5N=2.5N
V=F/pg=2.5N/(1.0*10^3kg/m^3*10N/kg)=2.5*10^-4m^2
2.p石=m/V=(8N/10N/kg)/2.5^-4m^2=3.2*10^3kg/m^2
3.p液=F/gv=(8N-6N)/(2.5^-4m^2*10N/kg)=0.8*10^3kg/m^2