Problem 5: The figure below shows two boys pushing a door (view from the top) hinged at C. If the boy wearing the green shirt (top right pushing down and left) applies the force FA = 25 [lb], how much force FB should the boy in orange (bottom left pushing up and left) apply such that the door does not rotate (about C) (i.e., the door is in equilibrium). IC 6 ft 3 ft- B 60° FB

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Problem 5:
The figure below shows two boys pushing a door (view from the top) hinged at C. If the boy
wearing the green shirt (top right pushing down and left) applies the force FA = 25 [lb], how
much force FB should the boy in orange (bottom left pushing up and left) apply such that the
door does not rotate (about C) (i.e., the door is in equilibrium).
IC
6 ft
3 ft-
B
60°
FB
Transcribed Image Text:Problem 5: The figure below shows two boys pushing a door (view from the top) hinged at C. If the boy wearing the green shirt (top right pushing down and left) applies the force FA = 25 [lb], how much force FB should the boy in orange (bottom left pushing up and left) apply such that the door does not rotate (about C) (i.e., the door is in equilibrium). IC 6 ft 3 ft- B 60° FB
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