Consider the hydraulic lift system in the figure below, with 10 mm rod and 50 mm
ID: 1860347 • Letter: C
Question
Consider the hydraulic lift system in the figure below, with 10 mm rod and 50 mm cylinder, used to lift a 500 kg load.
(a) A handpump is being used with a stroke of 7 cm3 per pump actuation. How many pump cycles would be required to lift the load 100 mm high?
(b) Assume you operate the handpump at a speed of 0.3 Hz. How long would it take to lift the load 100 mm high?
(c) What is the work and power required from the pump operator?
(d) Assume now an electric motor is being used that pump at a rate of 3 litres / min. How long would it take to lift the load 100 mm?
(e) What is the work and power required from the electric motor? (10)
Consider the hydraulic lift system in the figure below, with 10 mm rod and 50 mm cylinder, used to lift a 500 kg load. A handpump is being used with a stroke of 7 cm3 per pump actuation. How many pump cycles would be required to lift the load 100 mm high? Assume you operate the handpump at a speed of 0.3 Hz. How long would it take to lift the load 100 mm high? What is the work and power required from the pump operator? Assume now an electric motor is being used that pump at a rate of 3 litres / min. How long would it take to lift the load 100 mm? What is the work and power required from the electric motor?Explanation / Answer
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