railway RRB JE (CBT I + CBT II) Mock Test 2024 Strength of Materials Principal Stress or Strain Principle Stress
The relation between maximum shear stress (τm) and maximum normal stress (σm ) in an axially loaded rectangular bar is:
1
τm = σm / 2
2
τm = (σm + 1)
3
τm = σm
4
τm = 2σm