Why door knobs are fixed at the edge of door? What will happen it the door knob is at the middle of the door?
Door knobs are fixed at the edge of the door to maximize the turning effect (torque) when opening or closing the door. If the knob were placed in the middle, the perpendicular distance from the pivot (hinges) would be reduced, requiring more force to operate the door. This would make opening and closing the door … Read more