7-54. The lever is attached to the shaft A using a key that has a width d and length of 25 mm. If the shaft is fixed and a vertical force of 200 N is applied perpendicular to the handle, determine the dimension d if the allowable shear stress for the key is Talloe - 35 MPa. -20 mm 500 mm 200 N

7-54. The lever is attached to the shaft A using a key that has a width d and length of 25 mm. If the shaft is fixed and a vertical force of 200 N is applied perpendicular to the handle, determine the dimension d if the allowable shear stress for the key is Talloe - 35 MPa. -20 mm 500 mm 200 N

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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Question

7-54. The lever is attached to the shaft A using a key that
has a width d and length of 25 mm. If the shaft is fixed and a
vertical force of 200 N is applied perpendicular to the
handle, determine the dimension d if the allowable shear
stress for the key is Talloe - 35 MPa.
-20 mm
500 mm
200 N

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What do the two a's mean on the drawing? And how does one find that Fa-a acts to the right of the keyway? I am beginning to understand stress but I can not identify where it is acting on the drawing without looking at the solution.

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