What is the external force acting on Point C of the truss?

• 15 kilonewtons upwards

• 10 kilonewtons upwards

• 20 kilonewtons downwards

• 25 kilonewtons downwards

What is the purpose of the method of joints in truss analysis?

• To calculate the weight of the truss

• To separate a joint and analyze forces acting on it

• To determine the material of the truss

• To find the length of truss members

In the method of joints, why are forces assumed to be in tension?

• Because tension is easier to calculate

• To simplify the analysis by assuming forces are pulling away from the joint

• Because compression is not possible in trusses

• To ensure all forces are in the same direction

What is the angle used in the equilibrium equations for the truss problem?

• 45 degrees

• 90 degrees

• 30 degrees

• 60 degrees

How is the internal force in member AB characterized based on the solution?

• 11.547 kilonewtons in tension

• 11.547 kilonewtons in compression

• 5.7735 kilonewtons in tension

• 5.7735 kilonewtons in compression

What does a negative value for the internal force in a truss member indicate?

• The force is in tension

• The force is in compression

• The force is not acting

• The force is zero

What is the internal force in member AC and its nature?

• 5.7735 kilonewtons in tension

• 11.547 kilonewtons in tension

• 5.7735 kilonewtons in compression

• 11.547 kilonewtons in compression