A trap door in a ceiling is 0.91 m square, has a mass of 11 kg, and

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A trap door in a ceiling is 0.91 m square, has a mass of 11 kg, and is hinged along one side, with a catch at the opposite side. If the center of gravity of the door is 10 cm toward the hinged side from the door's center, what are the magnitudes of the forces exerted by the door on (a) the catch and (b) the hinge?
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Fundamentals of Physics

ISBN: 978-1118230725

10th Extended edition

Authors: Jearl Walker, Halliday Resnick

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