4. A spiral staircase in a building is in the shape of a helix of radius 5 meters. Between two floors of the building, the stairs make one full revolution and climb by 4 meters. A person carries a bag of groceries up two floors. The combined mass of the person and groceries is 70 kg and the gravitational force is 70g downward, where g is the acceleration due to gravity. Calculate the work done by the person against gravity.

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter65: Achievement Review—section Six
Section: Chapter Questions
Problem 44AR: Solve these prism and cylinder exercises. Where necessary, round the answers to 2 decimal places...
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4. A spiral staircase in a building is in the shape of a helix of radius 5 meters. Between
two floors of the building, the stairs make one full revolution and climb by 4 meters.
A person carries a bag of groceries up two floors. The combined mass of the person
and groceries is 70 kg and the gravitational force is 70g downward, where g is the
acceleration due to gravity. Calculate the work done by the person against gravity.
Transcribed Image Text:4. A spiral staircase in a building is in the shape of a helix of radius 5 meters. Between two floors of the building, the stairs make one full revolution and climb by 4 meters. A person carries a bag of groceries up two floors. The combined mass of the person and groceries is 70 kg and the gravitational force is 70g downward, where g is the acceleration due to gravity. Calculate the work done by the person against gravity.
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