A trap door in a ceiling is 0.91 m square, has a mass of 11 kg, and is hinged along one
Chapter 12, Problem 86(choose chapter or problem)
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 doors center, what are the magnitudes of the forces exerted by the door on (a) the catch and (b) the hinge?
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