A solid shaft of 4 in. diameter is to be substituted with a hollow shaft of the same material and strength but should weigh half the original per foot length. The cost increases by 20% per foot if the hollow shaft is used. Determine the savings in % in the cost when the hollow shaft is used.
A solid shaft of 4 in. diameter is to be substituted with a hollow shaft of the same material and strength but should weigh half the original per foot length. The cost increases by 20% per foot if the hollow shaft is used. Determine the savings in % in the cost when the hollow shaft is used.
Solid Waste Engineering
3rd Edition
ISBN:9781305635203
Author:Worrell, William A.
Publisher:Worrell, William A.
Chapter4: Mechanical Processes
Section: Chapter Questions
Problem 4.21P
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A solid shaft of 4 in. diameter is to be substituted with a hollow shaft of the same material and strength but should weigh half the original per foot length. The cost increases by 20% per foot if the hollow shaft is used. Determine the savings in % in the cost when the hollow shaft is used.
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