Question: At a certain point in a material the resultant stress on a plane is (80 mathrm{MPa}) tensile inclined at (30^{circ}) to the normal to the

At a certain point in a material the resultant stress on a plane is $80 \mathrm{MPa}$ tensile inclined at $30^{\circ}$ to the normal to the plane. The stress on a plane at right angles to this plane has a normal tensile stress $50 \mathrm{MPa}$. Find

(a) the resultant stress on second plane,

(b) principal stresses, and

(c) principal planes.

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SOLUTION a To find the resultant stress on the second plane we can use the following formula n 1 cos ... View full answer

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