Bars of a square and circular cross-section with 0.5 m length is made of a material with a shear strength of 20 MPa. The square bar cross-section dimension is 4 cm × 4 cm and the cylindrical bar cross-section diameter is 4 cm. The specimens are loaded as shown in the figure. Which specimen (s) will fail due to the applied load as per the maximum shear stress theory?

Tensile and compressive load specimens

Bars of a square and circular cross-section with 0.5 m length is made

1.	Bars of a square and circular cross-section with 0.5 m length is made of a material with a shear strength of 20 MPa. The square bar cross-section dimension is 4 cm × 4 cm and the cylindrical bar cross-section diameter is 4 cm. The specimens are loaded as shown in the figure. Which specimen (s) will fail due to the applied load as per the maximum shear stress theory?
A.	Tensile and compressive load specimens
B.	Torsional load specimen
C.	Bending load specimen
D.	None of the specimens
Answer» B. Torsional load specimen

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