A uniform 300-n trapdoor in a ceiling is hingedat one side


A uniform 300-N trapdoor in a ceiling is hingedat one side.

a) Find the net upward force needed to begin toopen it, if the upward force is applied at the center.

b) Find the total force exerted on the door bythe hinges, if the upward force is applied at the center.

c) Find the net upward force needed to begin toopen it, if the upward force is applied at the center of the edgeopposite the hinges.

d) Find the total force exerted on the door bythe hinges, if the upward force is applied at the center of theedge opposite the hinges.

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Physics: A uniform 300-n trapdoor in a ceiling is hingedat one side
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