(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A symmetrical door of mass27.5 kgis5.44 m highand2.46 wide. The hinges are placed at the very top and very bottom of the door. Find the magnitude of the horizontal force exerted by the lower hinge.

2. Relevant equations

Fd=Fd

sum tau clockwise = sum tau counter-clockwise

3. The attempt at a solution

The center of mass is dead center of the door, since it's symmetrical. However, we have only done rotation for "1-dimensional" things like a table. I know that when you apply something like this to a table, you put the counterclockwise on one side, then the clockwise on the other. Since the door is vertical and has 2 points of rotation (the 2 hinges) I'm not sure how to work this out...

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# Homework Help: Find the magnitude of the horizontal force exerted by the lower hinge

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