HW problem 4A.3 from 7th edition


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Emily Huang 1E
Posts: 30
Joined: Fri Sep 28, 2018 12:20 am

HW problem 4A.3 from 7th edition

Postby Emily Huang 1E » Tue Jan 29, 2019 5:55 pm

I am confused as to why delta V=pi*r^2*d according to the solution manual. Where did the book get that equation from and do we need to know that equation?

Erin Kim 2G
Posts: 75
Joined: Fri Sep 28, 2018 12:26 am

Re: HW problem 4A.3 from 7th edition

Postby Erin Kim 2G » Tue Jan 29, 2019 6:49 pm

That is just the standard volume equation for a cylinder, and since volume is not constant for this piston we would use this equation to find out the change in volume for the pump. This is a standard math equation that should be known I believe, it is not on the constants and equations sheet.


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