Determine the magnitude and sense of the forces in bars a

Question

Question 1: Show that the two forces in Figure have a net moment of 120 kip-ft counterclockwise with respect to each of points O, A, B, and C.

Question 2: Show that the four forces in Figure have a net moment of zero with respect to points O and A and a third point of your choice.

Question 3: Determine the magnitude and sense of the moment of the force in Figure with respect to points O, A, and B. In other words, find M_O, M_A, and M_B. Denote the sense in each case by a curved arrow.

Question 4: Determine the magnitude and sense of the forces in cables A and B of Figure.

Question 5: Determine the magnitude and sense of the forces in bars A and B of Figure. Use the algebraic method, and then check your results graphically.

Question 6: Determine the magnitude and sense of the forces in bars A and B in Figure.

Question 7: Algebraically determine the forces in members A and B of the structure in Figure. (Note: The small triangle is another way to represent a hinge or pin connection.)