Question

Which of the following statements are correct regarding shear stress distribution across the cross section in a cantilevered beam with point load acting on the extreme end of the beam?

(a) Shear stress distribution across the cross section of beam is constant

(b) Shear stress distribution across the cross section of beam is zero

(c) Shear stress distribution across the cross section of beam is zero at center and maximum at extreme ends

(d) Shear stress distribution across the cross section of beam is zero at extreme ends and maximum at center

I have been asked this question in an online quiz.

My doubt stems from Shear Force & Bending Moment topic in portion Beams and Frames of Finite Element Method

Answer 1

The correct choice is (d) Shear stress distribution across the cross section of beam is zero at extreme ends and maximum at center

Best explanation: The shear stress distribution across the cross section of beam is zero at extreme ends and maximum at center.The variation in the magnitude of shear stress from center to the extreme ends follows a circular curve.