2. Shear Force and Bending Moment Diagrams

Try these first

1. 1.

   Define shear force.

   Hint

   Think about what resists sliding in structures.

2. 2.

   What is a bending moment?

   Hint

   Consider how forces create rotational effects.

3. 3.

   What does a shear force diagram represent?

   • Intensity of a point load
   • Variation of shear force along the beam
   • Bending moment in the beam

   Hint

   Remember how forces change due to loads.

4. 4.

   True or False: Contraflexure points are locations where the bending moment is maximum.

   • True
   • False

   Hint

   Think about where the beam curves change.

5. 5.

   A beam of length 8 m is subjected to a point load of 10 kN at its center. Calculate the shear force and bending moment at 2 m from the left end.

   Hint

   Use equilibrium equations to assess shear and moment.

6. 6.

   For a beam with a uniformly varying load ranging from 0 to 10 kN/m over 5 m, calculate the maximum bending moment and the shear force at mid span.

   Hint

   Consider an equivalent point load for the load distribution.