Question: A sand sample failed on a 4 5 plane ( measured counterclockwise from horizontal ) with a normal stress on the failure plane equal to

A sand sample failed on a 45 plane (measured counterclockwise from
horizontal) with a normal stress on the failure plane equal to 1 tsf . The angle of
internal friction of the sand was 37.
a. Draw the Mohr's circle.
b. Clearly label and give the coordinates for the pole.
c. What are the magnitudes and orientations of the principal stresses?
A sand sample failed on a 4 5 plane ( measured

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