In Fig. 12-19, a stationary 5 kg rod AC is held against a
Chapter , Problem 7(choose chapter or problem)
In Fig. 12-19, a stationary 5 kg rod AC is held against a wall by a rope and friction between rod and wall. The uniform rod is 1 m long, and angle () = 30. (a) If you are to find the magnitude of the force f on the rod from the rope with a single equation, at what labeled point should a rotation axis be placed? With that choice of axis and counterclockwise torques positive, what is the sign of (b) the torque Til' due to the rod's weight and (c) the torque Tr due to the pull on the rod by the rope? (d) Is the magnitude of T,. greater than, less than, or equal to the magnitude OfT",?
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