Forces On A Door Hinge Physics

Back to door design what really jumped out at me was how the forces on the door hinge were concentrated over such a small distance and are much closer to the floor than most doors.

Forces on a door hinge physics.

The distance between these means that while the net force on the gate is zero the gate will have a. We therefore define the moment or torque to be moment forc e perpendicular distance of force from pivot. A the three forces on the door are. The hinges a and b are symmetrical placed at the corners of the door and each supports half the weight of the door.

We conclude that the turning effect or torque of a force depends on the magnitude of the force and the perpendicular distance between the line of action of the force and the pivot the hinge of the door in the case above. The forces f in each hinge are equal. To understand in which direction the forces on the door we must appreciate the following. The force of gravity acts on the center of mass of the gate but the hinges act on the left edge.

Your graphic shows the pin in the hinge.