2.5. Beam Reactions

Try these first

1. 1.

   What does it mean for a beam to be in equilibrium?

   Hint

   Think about the balance of forces.

2. 2.

   List the three equations of equilibrium.

   Hint

   These involve forces in the x and y directions and moments.

3. 3.

   What do you use to visualize forces acting on a beam?

   • A graph
   • A spreadsheet
   • A Free Body Diagram

   Hint

   Think of a visual tool that's commonly used in physics.

4. 4.

   True or False: The summation of moments in equilibrium is always zero.

   • True
   • False

   Hint

   Remember what we said about moments!

5. 5.

   For a beam of length 8m with a load of 20kN located at 4m, calculate the reactions at both supports.

   Hint

   Use symmetry when the load is in the center.

6. 6.

   A beam is supported on both ends with a 15kN load positioned 3m from the left support. Calculate the reactions at both supports.

   Hint

   Consider distance when calculating moments.