- #1
xiangru119
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Homework Statement
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?
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.