Find the weight of the hanging mass when the spring, with spring constant 16.5 kN/m , has been stretched 12.7 cm . The tension in rod 30 is 3717 N . Recall that the pulley is massless. Express your answer to three significant figures and include the appropriate units. b View Available Hint(s) Part c - Determining the displacement of a spring The cable segment attached to the spring is at an angle of c5 = 50.00 from the ground. The spring has a spring constant of k = 16.5 kN/m . The pulley is attached to the ceiling by rod 50 that forms an angle 9 = 70.0 with the ceiling. The hanging mass causes a tension of 3938 N in rod 30. What is the displacement of the spring