College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 117

Fig. depicts a decorative window (the thick inner square) weighing 100 N suspended in a patio opening (the thin outer square). The upper two comer cables are each at 45° and the left one exerts a force ( F 1 of 100 N on the window. (a) How does the magnitude of the force exerted by the upper right cable ( F 2 ) compare to that exerted by the upper left cable: (1) F 2 F 1 , (2) F 2 = F 1 , or F 2 F 1 (b) Use your result from part (a) to help determine the force exerted by the bottom cable ( F 3 ).

FIGURE A suspended patio window See Exercise.