325ml=0.325L*密度1=0.325KG*G(重力加速度)=3.25N
水的密度是p=1kg/L,算得m=pV=0.325kg,G=mg=0.325*9.8=3.135N
325ml=325cm3水密度为1g/cm3325cm3=325g=0.325kg1kg=10N0.325*10=3.25N
约为3.25N
G = ρgV = 1000 × 9.8 × 0.000325 = 3.19 牛