P=G/S G一定,S大压强小,S小压强小
G=mg=ρVg=2.7*10³kg/m*0.1m*0.05m*0.02m*10N/kg=2.7N
P最小=2.7N/0.1m*0.05m=540Pa
P最大=2.7N/0.05m*0.02m=2700Pa
P=G/S G一定,S大压强小,S小压强小
G=mg=ρVg=2.7*10³kg/m*0.1m*0.05m*0.02m*10N/kg=2.7N
P最小=2.7N/0.1m*0.05m=540Pa
P最大=2.7N/0.05m*0.02m=2700Pa