流力-作用力問題 - 高考
By Sarah
at 2019-10-10T11:09
at 2019-10-10T11:09
Table of Contents
https://imgur.com/NLZ4MvI
考題來源:專技高考
想請教此題解法
1.先個別算作用力再總和
2.水作用力計算,把油高度換算水高度(水的等效高度)
3.水銀作用力計算,一樣把油跟水高度換算水銀高度(水銀的等效高度)
4.以F=rhA公式計算,以單一液面來看h=(0.5H+等效高度) 其中H為單一液面高度
F油 = (880*9.81)*0.5*(1*1)= 4316.4 N
F水 = (998*9.81)*[1+(880/998)*1]*(1*2)= 36846.4 N
F水銀 =(13550*9.81)*[0.25+(880/13550)*1+(998/13550)*2]*(1*0.5)=30705.8 N
F總=71868.6N
想問這樣解法OK嗎?或者哪有誤 謝謝!
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