Question $1(20$ marks$)$

The compression and tension strain are critical as it is used to assess the distribution of load along the component. It was found that point A has the highest critical plane as shown in Figure $1.$

From the Mohr's circle, determine the:

a$.$ Principal strains

$(10$ marks$)$

b$.$ Maximum shear stress $(5$ marks$)$

c$.$ Orientation angle of the plane $(5$ marks$)$