Determine the moment of inertia of the door

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Reference no: EM13506543

A professor's office door is 0.90m wide, 2.2m high, 4.2cm thick; has a mass of 28kg , and pivots on frictionless hinges. A "door closer" is attached to door and the top of the door frame. When the door is open and at rest, the door closer exerts a torque of 5.5N*m .

What is the moment of inertia of the door?

If you let go of the open door, what is its angular acceleration immediately afterward?

Reference no: EM13506543

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