Most of these very early hinges are bronze door hinges.
Second hinge of the door.
Hinges have been found in ancient societies in africa asia europe and elsewhere.
If your left hand is nearer the doorknob then it is a left handed hinge and door.
The first is the pivot and the second is the bracket.
A uniform 26 kg door that is 2 5 m high by 0 80 m wide is hung from two hinges that are 20 cm from the top and 20 cm from the bottom.
A door belongs to the second class of levers because its pivot hinge is at the end the load weight of the door is at the center while the effort opening the door is applied at the other end.
If each hinge supports half the weight of the door find the magnitude and direction of the horizontal components of the forces exerted by the two hinges on the door.
This hinge is installed against the recess in the door where it is impossible to view from the outside.
Akkadian and hittite panache was so great the massive palaces sacred structures and protective gates they built had heavy doors that operated with load bearing metal hinges.
If your right hand is nearer the doorknob then it is a right handed hinge and door.
The pivot allows the door to be opened at a 90 degree angle.
However it is seen on interior doors from time to time.
Metal was expensive and labor.