G-G1=F浮
G-G1=ρVg
14.7-4.9=1000*V*9.8
V=0.001m^3
V金=m/ρ金=G/(ρ金g)=14.7/(2000*9.8)=0.00075m^3
V空=V-V金=0.00025m^3
答:空心部分的体积是0.00025m^3
G-G1=F浮
G-G1=ρVg
14.7-4.9=1000*V*9.8
V=0.001m^3
V金=m/ρ金=G/(ρ金g)=14.7/(2000*9.8)=0.00075m^3
V空=V-V金=0.00025m^3
答:空心部分的体积是0.00025m^3