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You try to close a door by pushing with a force F at angle theta to...

You try to close a door by pushing with a force F at angle theta to the plane of the door directly in the center of the door. The door has mass M, height H, and width W. Give an expression for the time, t, required for the door to close if it is initially open at some angle theta. A top view of the door is shown. Assume the door starts at rest.

i dont know where to begin with this problem with the given information

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