2.3кН=2300Н
7МН=7000000Н
102350мН=102.4Н
2
P=m*g=S×V×g
V=a×b×c
V=1.5м×0.4м×0.04м=0.024м3
P=0.024м3×2300кг/м3*900Н/кг=46980Н=47кН
2.3кН=2300Н
7МН=7000000Н
102350мН=102.4Н
2
P=m*g=S×V×g
V=a×b×c
V=1.5м×0.4м×0.04м=0.024м3
P=0.024м3×2300кг/м3*900Н/кг=46980Н=47кН