A 220m high rectangular door is closed by a force of 2000n, Ask an Expert

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A 2.20m high rectangular door is closed by a force of 200.0N acting through the door knob. The door knob is at a perpendicular distance of 80.0cm from the hinged edge of the door and 1.1m from the bottom of the door. What torque is applied to the door? Assume the door is massless.

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