Question

初三的物理题（有关压强与压力的）谁会?

Answer 1

(1)水对容器的压力=水的重力

m(水)=ρv=1g/cm^3*500cm^3=500g=0.5kg

G(水)=mg=0.5*9.8=4.9N

(2)桌面受到的压强:

P=F/S

F=G(水)+G(容器)=1+4.9=5.9N

S=50/10000=0.05m^2

P=5.9/0.05=118Pa