Second Hinge Of The Door

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.

Second hinge of the door.

This hinge is not as common as some of the other types. If your left hand is nearer the doorknob then it is a left handed hinge and door. This hinge is installed against the recess in the door where it is impossible to view from the outside. Another way to determine the door hinge direction is to open the door and stand with your back against the hinge jamb or area.

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. Metal was expensive and labor. The pivot allows the door to be opened at a 90 degree angle. The first is the pivot and the second is the bracket.

Hinges have been found in ancient societies in africa asia europe and elsewhere. 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. Most of these very early hinges are bronze door hinges. 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.