1. Theories of Failure (Contd.)

Try these first

1. 1.

   What is shear force?

   Hint

   Think about forces acting along the plane of a material.

2. 2.

   What does maximum shear stress theory help engineers determine?

   Hint

   This theory is crucial for ensuring material integrity under loads.

3. 3.

   What factors need to be considered in lever design?

   • Only the applied force
   • Applied force and shear stress
   • Applied force
   • shear stress
   • and bending moments

   Hint

   Think about stability and predictability in engineering design.

4. 4.

   True or False: The maximum shear stress occurs where normal stress is minimized.

   • True
   • False

   Hint

   Analyze how different stresses interact with each other.

5. 5.

   Model a design for a lever that supports varying load factors and describe the interaction of different stress components throughout.

   Hint

   Consider how loads change and stress distributions with different applied forces.

6. 6.

   You have a component exhibiting both elastic and plastic behavior. How would you approach the design for safety against failure?

   Hint

   Compare the elastic range to the plastic range in stress-strain diagrams.