3. EQUILIBRIUM AND REACTIONS

Try these first

1. 1.

   What is a reaction in structural analysis?

   Hint

   Think about how supports interact with loads.

2. 2.

   What does static equilibrium state?

   Hint

   Recall Newton's first law.

3. 3.

   What is the relationship between forces in static equilibrium?

   • The sum of forces is equal to zero
   • The sum of forces is greater than zero
   • The sum of forces is less than zero

   Hint

   Refer to Newton's first law.

4. 4.

   True or False: A fixed support allows both rotation and movement.

   • True
   • False

   Hint

   Think about the capabilities of fixed supports.

5. 5.

   A simply supported beam has a point load applied at its center. Determine the reactions at both supports.

   Hint

   Consider using equilibrium equations to find each support's reaction.

6. 6.

   For a frame structure, with multiple loads at various points and internal hinges, outline how to use the equations of conditions to find reactions.

   Hint

   Identify all forces acting on the frame to maintain equilibrium.