This is the lei that I got from senior lu'au last night. My lei is purple, which is the best color to use for a lei. I used my lei to demonstrate forces acting upon my lei. The door knob is exerting an equal amount of force as my pull on the lei in opposite directions, which is why the lei is evenly flat and not sagging downward. Also, another force acting upon the lei are the milligrams which cause a downward force. If I was to move the lei around with my hand around the door knob, the lei would produce force friction towards the knob. If I took the lei off the knob and put it on my desk, then inertia, mg downward force, and normal force would be acting upon my lei.