18.1.1. Single Bar System

Try these first

1. 1.

   What is a rigid bar?

   Hint

   Think about the properties of materials in physics.

2. 2.

   Define axial load.

   Hint

   Consider how forces are applied in a line.

3. 3.

   What happens to the moment if the angle increases in a single bar system?

   • It increases
   • It decreases
   • Remains the same

   Hint

   Consider the sin function's behavior.

4. 4.

   Stable equilibrium implies that a system will:

   • Return to original position
   • Move away

   Hint

   Think about how a ball behaves in a bowl.

5. 5.

   Design a simple model for a single bar system using a ruler and a spring. Apply various weights and measure the angles and moments.

   Hint

   Consider how varying weights affect the angle of the bar.

6. 6.

   Discuss how the stability of a column can be affected by initial imperfections.

   Hint

   Think about real buildings and what happens in poor designs.