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QUESTION
A professor's office door is 0.95 wide, 2.0 high, and 4.0 thick; has a mass of 25 ; and pivots on frictionless hinges.
A professor's office door is 0.95 wide, 2.0 high, and 4.0 thick; has a mass of 25 ; and pivots on frictionless hinges. A "door closer" is attached to the door and the top of the door frame
