A long steel bar is under a tensile stress due to a force F as shown. For what angle thetathe tensile and shearing stress are maximum?

A long steel bar is under a tensile stress due to a force F as shown.

1.	A long steel bar is under a tensile stress due to a force F as shown. For what angle thetathe tensile and shearing stress are maximum?
Answer» `90^@` and `45^@` `60^@` and `45^@` `90^@` and `60^@` `45^@` and `45^@` ANSWER :A