3.2. Body force contribution

Try these first

1. 1.

   What is a body force?

   Hint

   Think about forces that affect every part of an object.

2. 2.

   Give an example of a body force.

   Hint

   Consider forces related to natural phenomena.

3. 3.

   What does a body force represent?

   • A point force at the surface
   • A force acting per unit volume
   • An external applied load

   Hint

   Think about forces that affect whole objects instead of just surfaces.

4. 4.

   True or False: Body forces only act at the boundaries of a material.

   • True
   • False

   Hint

   Consider how gravity acts on an object.

5. 5.

   Calculate the total body force acting on a cuboid with dimensions 2m x 3m x 4m with a body force density of 10 N/m^3.

   Hint

   Remember to calculate volume first.

6. 6.

   Explain how changes in temperature might affect the body force in a scenario with variable density material.

   Hint

   Think about material expansion and its implications.