Tag: A professor’s office door to 0.91 m wide

A professor’s office door to 0.91 m wide, 2.0 m high, and 4.0 cm thick; has a mass of 25kg; and pivots on frictionless hinges. A “door closer” is attached to the door and the top of the door frame. When the door is open and at rest, the door closer exerts a torque of…