No elements selected L. B Part B - Finding the weight of the hanging mass Find the weight of the hanging mass when the spring, with spring constant 16.5 kN/m, has been stretched 11.7 cm. The tension in rod BD is 3425 N. Recall that the pulley is massless. Express your answer to three significant figures and include the appropriate units. You did not open hints for this part. ANSWER: W = Part C - Determining the displacement of a spring The cable segment attached to the spring is at an angle of 50.0° from the ground. The spring has a spring constant of k = 16.5 kN/m. The pulley is attached to the ceiling by rod BD that forms an angle = 70.0° with the ceiling. The hanging mass causes a tension of 3628 N in rod BD. What is the displacement of the spring? Express your answer to three significant figures and include the appropriate units. You did not open hints for this part. ANSWER: The Free-Body Diagram Learning Goal: To draw the free-body diagram of a point particle, use the equations of equilibrium to find unknown forces, and understand how frictionless pulleys affect the transfer of force in a cable. As shown, a mass is suspended from a cable that wraps around a frictionless and massless pulley. The cable connects to a linear elastic spring. For this problem, treat the pulley as a point particle at B. B A Part A - Drawing the free-body diagram of the pulley The portion of the cable attached to the spring is at an angle of = 35° from the ground. The spring has a spring constant of k = 16.5 kN/m. The pulley is attached to the ceiling by rod BD that forms an angle = 62.5" with the ceiling. Draw the free-body diagram of the pulley. Recall that the pulley is massless. Start all forces at point B in the center of the pulley. Draw all forces as tensile forces, or pulling forces. All angles should be measured from the positive x axis. They are positive in the counterclockwise direction. Note - You can click on the attributes button after selecting a vector and enter angle value of the vector in the angle field. You did not open hints for this part. ANSWER: