Plunger diameter=10.000in
Cylinder diameter=10.006in
Kinematic viscosity=0.004ft2/s
G=0.85
Plunger moves 0.6ft/s
ρ=μ(dxdu),δ=32.20.85×62.4=1.647plunges/ft3
μ=1.647×0.004=0.006588lb.s/ft2
du=210.006−10.000/12=0.000250ft
Z=0.006588(0.6/0.00025)=15.81lb/ft2
Ff=ZA=15.81×(9×π(1210)=372.5lb
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