A 120 foot high dam is shaped by the symmetric function y = 2x^(4/3). The water level is at the top of the dam. Set up an integral that gives the total water pressure against the dam. Water weights 62.5 lbs per cubic foot.(adsbygoogle = window.adsbygoogle || []).push({});

S = integral sign

P = F / A

but teacher's answer is

120

S 62.5(120-y)*2(y/2)^(3/4)dy

0

I understand the 2(y/2)^(3/4)dy part, its the area, but I dont get what is

62.4(120-y), its seems to me that the teacher is doing P = F * A, which is wrong... if I m not wrong... please help me clear this... Final coming!!!

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# Homework Help: I dont understand this

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