The graph of $y = x^2$ on $0 \leq x \leq 2$ is revolved about the $y$-axis to form a tank that is then filled with salt water from the Dead Sea (weighing approximately 73 lb/ft³). Write a definite integral to compute the amount of work required to pump all of the water to the top of the tank. (You do not have to evaluate the integral).
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This work can be calculated as the force required to lift the slice multiplied by the distance it is lifted. Show more…
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