Question

A rectangular block of material is subjected to a tensile stress of 100 Mpa on one plane and tensile stress of 48 Mpa on a plane at right angles, together with shear stresses of 65 Mpa on the same plane. Find:
i)The magnitude of principle stress.
ii)Magnitude of greatest shear stress.
iii)The direction of principle plane.
iv) The normal and tangential stress ​

Answer 1

On a plane, resultant stress is inclined at an angle of 45o to the plane. If the normal stress is 100 N /mm2, the shear stress on the plane is:

a)71.5 N/mm2

b)100 N/mm2

c)86.6 N/mm2

d)120.8 N/mm2

Correct answer is option 'B