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.