1.

A plane element is subjected to shearing stresses of 50 MPa. The principal stresses existing in this element and the directions of the planes on which they occur would be _______ at __________ respectively.

A. 50 MPa at 45°
B. 50 MPa at 90°
C. 7 MPa at 45°
D. 7 MPa at 90°
Answer» B. 50 MPa at 90°


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