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Problem 3 Consider the truss in Figure P3, which is supported on a pin at joint A and a rocker/roller at
joint G. It is loaded with two vertical forces, P = 3.0 kN and Q = 12.0 kN. The support reaction forces and
their assumed directions are illustrated in the figure and their values are A, = 0KN, Ay = 4.5...

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a) Determine the number of zero-force members in the truss system. [1 mark] Number of zero-force
members = b) Determine the angle theta shown in Figure P3. Provide your answer in degrees to at least
4 decimal places. [0 marks] Angle theta [degrees] = c) Determine the force in member AB.... 

this is all info provided so please answer best as possible
 
 

Problem 3 Consider the truss in Figure P3, which is supported on a pin at joint A and a rocker/roller at joint G. It is loaded with two vertical forces, P = 3.0 kN and Q = 12.0 kN. The support reaction forces and their assumed directions are illustrated in the figure and their values are A = 0 kN, A = 4.5 kN, and Gy = 10.5 kN. Here, h = 1.75 m. B C D E F h G A Ax H J 1 m 1 m 1 m 1 m 1 m 1 m Gy Q P Figure P3. Truss loaded with various point forces.