(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Pressures up to 3000 atm are measured with a dead-weight gauge. The piston diameter is 0.17 (in). What is the approximate mass in (lbm) of the weights required?

3. The attempt at a solution

Abs. pressure = Gauge pressure + Atmospheric pressure

= 3000 atm + 1 atm

= 3001 atm * 14.696 psi/atm

= 44102.696 psi

A = pi*D2/4

= 0.023 in2

P = F/A

P*A = mg

44102.696*0.023 = m * 32.174 ft/s2 (12 in./1 ft)

m= 2.627 lbm

4. The actual answer: 1000.7 lbm. So can anyone point out my error?

Any help would be appreciated. Thank you.

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# Homework Help: Unit Conversion: What went wrong?

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