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The anatomical relationship of a spinal nerve to the spinal cord and how this relates to the concept of a spinal cord segment
A door has a height of 2.1 meters along a y axis that extends vertically upward and a width of 0.91 meters along an x axis that extends outward from the hinged edge of the door. A hinge 0.30 meters from the top and a hinge 0.30 meters from the bottom each support half the door’s mass, which is 27 kilogram. In unit-vector notation, what is the forces on the door at the bottom hinge?