5.9kg沙子=5.9*10=59N
自重+沙重=浮力
1000kg/m3*10n/kg*(0.4*0.2*0.1)=600kg/m3*(0.4*0.2*0.1-V')*10N/KG+59N
80N=59N+48N-600V'
600v'=27
v'=0.045M3
5.9kg沙子=5.9*10=59N
自重+沙重=浮力
1000kg/m3*10n/kg*(0.4*0.2*0.1)=600kg/m3*(0.4*0.2*0.1-V')*10N/KG+59N
80N=59N+48N-600V'
600v'=27
v'=0.045M3