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How much work, in Joules, does it take to dig up a cylindrically shaped hole of...

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Physics

How much work, in Joules, does it take to dig up a cylindricallyshaped hole of depth 2 meters and outer diameter 3 meters? How manyservings of pasta are required to complete this work, assuming theenergy from the pasta is converted with 5% efficiency to work?Assume that one serving of pasta contains 200 Cal, and the densityof soil is 1,200 kg/m3.

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3.9 Ratings (410 Votes)
The work done in lifting an object is quantified by its changein potential energyHere consider that the potential energy is zero in the bottomof the    See Answer
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