Determine the spring stiffness required for this design

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Reference no: EM13933291

The uniform garage door AB shown in section has a mass m and is equipped with two of the spring- loaded mechanisms shown, one on each side of the door. The arm OB has negligible mass, and the upper corner A of the door is free to move horizontally on a roller.

The unstretched length of the spring is r - a, so that in the top position with () = 7T the spring force is zero.

To ensure smooth action of the door as it reaches the vertical closed position () = 0, it is desirable that the door be insensitive to movement in this position.

Determine the spring stiffness k required for this design.

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Reference no: EM13933291

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