Question: 3 - 2 3 E . An operator makes 2 0 complete cycles during a 1 5 - sec interval using the hand pump of

3-23E. An operator makes 20 complete cycles during a 15-sec interval using the hand pump of Figure. Each complete cycle consists of two pump strokes (intake and power). The pump has a 2-in-diameter piston, and the load cylinder has a 4-in-diameter piston. The average hand force is 20 lb during each power stroke.
a. How much load can be lifted?
b. Through what distance will the load be moved during the 15-sec interval assuming no oil leakage? The pump piston has a 3-in stroke.
c. What is the output HP assuming 90% efficiency?
Hand-operated hydraulic jack.
3 - 2 3 E . An operator makes 2 0 complete cycles

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