I've been working on this question for quite a while and I've tried several methods with no success. I am no where near confident in my method and I was wondering if someone could point me in the right direction. The question is:(adsbygoogle = window.adsbygoogle || []).push({});

A 16.5 cm diameter circular cover is placed over a 8.0 cm diameter hole that leads into an evacuated chamer. The pressure in the chamber is 22.5 kPa. How much force is required to pull the cover off?

I attempted to solve by using F1/A1=F2/A2

so... I got F1=P1A1

=113.1N

And 113.1N/5.027e-3m=x/2.138e-2m

Isolating for x, and then F2=481N

I have also tried other methods and gotten F2= 1510N, 156N, 1511N, 212N, and 665N.

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# Homework Help: Evacuatred chamber pressure question

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