Work required to fill a conical tank

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SUMMARY

The work required to pump water from a right circular conical tank with a height of 3 feet and a radius of 1 foot, filled to a height of 2 feet, is calculated using the principles of calculus and physics. The weight of the water is 62.5 lb/ft³, and the setup involves using similar triangles to relate the dimensions of the tank to the height of the water. The incremental work, ΔW, is determined by multiplying the weight of a volume element by the distance it must be raised, with integration limits defined by the height of the water.

PREREQUISITES
  • Understanding of calculus, specifically integration techniques.
  • Knowledge of physics principles related to work and weight.
  • Familiarity with geometric concepts, particularly similar triangles.
  • Basic understanding of fluid mechanics and density calculations.
NEXT STEPS
  • Study the principles of integration in calculus, focusing on applications in physics.
  • Learn about the concept of work in physics, particularly in fluid dynamics.
  • Explore similar triangles and their applications in geometric problems.
  • Investigate the properties of fluids, including density and weight calculations.
USEFUL FOR

Students in physics and mathematics, engineers working with fluid systems, and anyone involved in calculating work done in conical tank scenarios.

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A right circular conical tank of height 3 feet and radius 1 foot at the top is filled with water to a height of 2 feet. Find the work required to pump all the water up and over the top of the tank.

similar triangles : x=y/3

water 62.5 lb/ft^3

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?? am i setting this up right
 
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Please show us how you set it up so that we can check your work. What is the weight of a typical volume element? The incremental work, \Delta W, is the weight of a typical volume element times the distance it has to be raised. Finally, the limits of integration will be the interval over which \Delta y ranges.
 

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