题2 (po+mg/s)v 0+mg/s)p △) 浮子在压缩后下沉的条件是 m(p +mg /s) < (V-△) P(po +mg /s)( / ) / ) ( ) ( / ) ( ) ( ( / ) 0 0 0 0 0 0 0 0 0 0 1 p m g s m g s V V V m p V m m g s V V V p p m g s V V t t t + + −     + −  +  =   浮子在压缩后下沉的条件是 题2