A 10 ft by 15 ft rectangular cistern (storage tank for rainwater) has its top 30 ft below ground level. The cistern, currently full, is to be emptied for inspection by pumping its contents to ground level. Assume that the water at the location weighs 62.26 a. How much work is done to pump all the water out of the cistern? b. How long will it take a - hp pump, rated at 367 ft-lb/sec, to do the work in part (a)? c. How much work is done to pump all the water out of a spout 2 ft above the top of the cistern d. How long will it take a hp pump, rated at 367 ft-lb/sec, to do the work in part (c)?

A 10 ft by 15 ft rectangular cistern (storage tank for rainwater) has its top 30 ft below ground level. The cistern, currently full, is to be emptied for inspection by pumping its contents to ground level. Assume that the water at the location weighs 62.26 a. How much work is done to pump all the water out of the cistern? b. How long will it take a - hp pump, rated at 367 ft-lb/sec, to do the work in part (a)? c. How much work is done to pump all the water out of a spout 2 ft above the top of the cistern d. How long will it take a hp pump, rated at 367 ft-lb/sec, to do the work in part (c)?

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter8: Centroids And Distributed Loads

Section: Chapter Questions

Problem 8.113P: Calculate the resultant force caused by the water acting on the parabolic arch dam. The water levels...

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