Find when the door is open and at rest

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Reference no: EM13340875

A professor's office door is 0.89m wide, 2.0m high, and 4.0cm 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 4.5N?m.

What is the least force that you need to apply to the door to hold it open?

Reference no: EM13340875

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