A spiral staircase in a building is in the shape of a helix of radius meters. Between two floors of the building, the stairs make one full revolution and climb by meters. A person carries a bag of groceries up two floors. The combined mass of the person and the groceries is kg and the gravitational force is downward, where is the acceleration due to gravity, in meters per second squared. Calculate the work done by the person against gravity in joules. Enter the exact answer.
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A spiral staircase in a building is in the shape of a helix of radius meters. Between two floors of...
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