F浮=G—F示=14.7N—9.8N=4.9N
F浮=P水gv排c
浸没V=V排= F浮/P水g=4.9N/(1X10³kg/m³X9.8N/kg)=0.5X10^-³m³=500cm³
p石=m/V=G/gv=14.7N/(9.8N/kgX0.5X10³m³)=3X10³kg/m³=3g/cm³
F浮=G—F示=14.7N—9.8N=4.9N
F浮=P水gv排c
浸没V=V排= F浮/P水g=4.9N/(1X10³kg/m³X9.8N/kg)=0.5X10^-³m³=500cm³
p石=m/V=G/gv=14.7N/(9.8N/kgX0.5X10³m³)=3X10³kg/m³=3g/cm³