A circular shaft subjected to pure torsion will display which of the following?

Question

A circular shaft subjected to pure torsion will display which of the following? Constant shear stress throughout the shaft Maximum shear stress at the center of the shaft No shear stress throughout the shaft Maximum shear stress at the outer fibers Looking at a section of a transversely loaded beam, what is the bending stress at its neutral axis? A combination of both shear and moment loading Equal to the shear at that section A function of the maximum stress at that section Zero Where is the shearing stress maximum for a transversely loaded regular beam? The outer most fiber The neutral axis The free surfaces There is no shearing stress A simply supported beam supports a triangular distributed load as shown. The peak load at the right end of the beam is 5 N/m. What is the bending moment at a point 7m from the left end of the beam? 15 N middot m 17 N middot m 28 N middot m 30 N middot m A rectangular beam has a cross-section of 5 cm wide times 10 cm deep, with a maximum shear of 2250 N. What is the maximum shear stress in the beam? 790 kPa 675 kPa 567 kPa 416 kPa A beam has the triangular cross-section shown. What is the maximum compressive stress in the beam? 7.8 MPa 15.6 MPa 23.4 MPa 31.3 MPa Please show all work for problems, and box your final answer. For the following 3 problems refer to the following simply supported beam What is the maximum bending moment? What is the maximum shear? If the beam was a W130 times 23.8, what is the maximum bending stress? What is the maximum shear stress?

Explanation / Answer

1 d 2 d 3 b 4 d 5 b

5 max shear stress = 1.5 V/a = 1.5 * 2250 / 5000 = 0.675 MPA =675 kpa   

ask 6 to 8 in a seperate 1500 points question

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