A trap door of length and width 145 m is held open at an, Ask an Expert

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A trap door, of length and width 1.45 m, is held open at an angle of 65.0° with respect to the floor. A rope is attached to the raised edge of the door and fastened to the wall behind the door in such a position that the rope pulls perpendicularly to the trap door. If the mass of the trap door is 15.2 kg, what is the torque exerted on the trap door by the rope?

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