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ques3

Asked by rbhatt16 20th December 2017, 11:22 PM
Answered by Expert
Answer:
As shown in the figure, forces F can be resolved perpendicular to the plane and parallel to the plane. perpendicular componenet gives tensile stress to the plane. parallel component gives shear stress. Though perpendicularly resolved components of left side force and right side force are opposite to each other, they give combined tensile stress to the plane. similar thing happening for shear stress also.
 
begin mathsize 12px style T e n s i l e space s t r e s s space equals space fraction numerator 2 F cos alpha over denominator A cos alpha end fraction space equals space fraction numerator 2 F over denominator A end fraction S h e a r space s t r e s s space space equals space fraction numerator 2 F sin alpha over denominator A cos alpha end fraction space equals space fraction numerator 2 F space tan alpha over denominator A end fraction end style
 
Tensile stress is independent of angle α. Shear stress is maximum when α = 90º
Answered by Expert 24th December 2017, 7:44 AM
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