Which of the following shows the positive sign convention for the internal actions when we we cut the beam at A?

The truss shown has a horizontal load of P= 8.6 kN applied at joint B.  

Using the Method of Joints, calculate the force in member BC (in kN). Indicate whether the member is in tension or compression by using the '-' for compression and no sign for tension. 

Do NOT include any units.

Give your answer to 1 decimal place.

When using Method of Joints, which node would you analyse to determine the internal forces in members AB & BC of the truss shown?

When using Method of Joints, which node(s) could your analysis begin at to determine the forces in each member of the truss shown? Assume the reaction forces are all known.  

To determine the force in a truss member, which method is independent of other internal forces? 

Only two equations of equilibrium (∑F_x = 0,  ∑F_y = 0) can be applied when analyzing a truss using method of sections 

In the truss system below, with the loading as shown, member BC;

In a truss, all loading is assumed to be applied at the joints

Classify the following trusses as either unstable (U), determinate (D), or indeterminate (I).

(a) 

(b)

(c)