3/24 A person holds a 30-kg suitcase by its handle as indi- cated in the figure. Determine the tension in each of the four identical links AB. 30(9.81) N A В A B. 35° 35°

3. The hinged door shown has a chain attached at point C connected to point B. It has a tension force of 250 N. To maintain the door in that position shown, what is the magnitude of the moment of the axis where the hinges are attached? 2.5 m 1.5 m Fc = 250 N. 30 1 m 0.5 m

Using the principles to be developed in Chapter 3 on equilibrium, one can determine that the tension in cable AB is 289.8 N. Determine the moment about the x-axis of this tension force acting on point A. Compare your result with the moment of the weight W of the 25- kg uniform plate about the x-axis. What is the moment of the tension force acting at A about the line OB? 0.38 m Mx = Answers: 0.57 m i -74.047 (Mx)w= MOB -63.853 0 A 0.51 m W 25 kg 23⁰ 0.92 m N-m N-m N•m

3-50 with the following modifications: Change the z-coordinate of point A from +6 ft to +8 ft