Math Problem Statement
Find the work done in pumping gasoline that weighs 42 pounds per cubic foot. A cylindrical gasoline tank 3 feet in diameter and 2 feet long is carried on the back of a truck and is used to fuel tractors. The axis of the tank is horizontal. The opening on the tractor tank is 5 feet above the top of the tank in the truck. Find the work done (in ft-lb) in pumping the entire contents of the fuel tank into the tractor. (Round your answer to the nearest integer.)
Solution
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Math Problem Analysis
Mathematical Concepts
Calculus
Fluid Mechanics
Work and Energy
Formulas
Work = ∫ from a to b of F(x) dx
Volume of a cylindrical slice: dV = 4√(r^2 - y^2) dy
Weight of a slice: dW = 168√(2.25 - y^2) dy
Distance: 8 - y
Theorems
Pythagorean Theorem
Work-Energy Principle
Suitable Grade Level
College Level - Calculus and Engineering
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