1) A shaft, mounted in bearings at A and D, holds pulleys at B and C. All forces shown represent belt pulls. The shaft is made from ASTM grade 25 cast iron (Sur-26 kpsi, Suc-97 kpsi). The application requires a safety factor of SF=2.8. What diameter should be used for the shaft? [Remember, cast iron is a brittle material and brittle materials use Modified Mohr Theory] 300 lb 6" D. 50 lb Je 8" D. 27 lb 360 lb D 7 6"

1) A shaft, mounted in bearings at A and D, holds pulleys at B and C. All forces shown represent belt pulls. The shaft is made from ASTM grade 25 cast iron (Sur-26 kpsi, Suc-97 kpsi). The application requires a safety factor of SF=2.8. What diameter should be used for the shaft? [Remember, cast iron is a brittle material and brittle materials use Modified Mohr Theory] 300 lb 6" D. 50 lb Je 8" D. 27 lb 360 lb D 7 6"

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Engineering Drawing

Technical drawing has been around since ancient times. As in the ancient Renaissance, complicated drawings were created, including Leonardo da Vinci's drawing. Modern engineering drawing, including its specific orthographic projection with scale conventions, began in Europe (France) during the early stages of Industrialization. L.T. C. Rolt also made some of Marc's drawings for its block-making machinery (in 1799) that also may have contributed significantly to British engineering technology. Since he learned the art of presenting three-dimensional(3D) items in a two-dimensional(2D) plane, as we now term mechanical drawing. 

Question

1) A shaft, mounted in bearings at A and D, holds pulleys at B and C. All forces shown represent belt
pulls. The shaft is made from ASTM grade 25 cast iron (Sur-26 kpsi, Suc-97 kpsi). The application
requires a safety factor of SF=2.8. What diameter should be used for the shaft?
[Remember, cast iron is a brittle material and brittle materials use Modified Mohr Theory]
300 lb
6" D.
50 lb
fe
8" D.
27 lb
360 lb D
7"
6°

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