: The mechanics of a pneumatic jack used in a service station is shown in Fig. 2-3. If the car and lift weigh 5000 lb,
: The mechanics of a pneumatic jack used in a service station is shown
in Fig. 2-3. If the car and lift weigh 5000 lb, determine the force that
must be developed by the air compressor at B to raise the lift at a
constant velocity. Air is in the line from B to A. The air line at B has an
inner diameter of 1 in., and the post at A has a diameter of 12 in.
1 in.
-12 in.
Fig. 2-3
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