A door is construct of a thin homogenous slab of material: it has a width of 1m.

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A door is construct of a thin homogenous slab of material: it has a width of 1m. If the door is opened through 90o, it is found that on release it closes itself in 2s. Assume that the hinges are frictionless, and show that the line of hinges must make an angle of approximately 3o with the vertical.
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Applied Statistics And Probability For Engineers

ISBN: 9781118539712

6th Edition

Authors: Douglas C. Montgomery, George C. Runger

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