Air is enclosed by a rigid cylinder containing a piston. A
pressure gage attached to the cylinder indicates an initial reading
of 25 psi. Determine the reading on the gage when the piston has
compressed the air to one-third its original volume. Assume the
1-m3
200 s1
Nm2
37 °C 198.6 °F2
R / 5.00 in. R i 2.45 in., o 2.50 in.,
F I G U R E P1.69
0.2 in.
0.001 in.
5,000 rpm
30°
= 0.010 lb • s/ft2 μ
F I G U R E P1.70
Liquid
Fixed
outer
cylinder
ω
Rotating
inner
cylinder
Ri
Ro
Rotating plate
0.1 in. gap
Torque
F I G U R E P1.71
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