They seem to be like different flaps connected by hinges. So the force exerted over a flap is communicated to the other flaps through the hinges. Know what I mean? What's that called in physics and mechanics?
Aloha [email protected], I don't know/remember enough physics/mechanics/engineering to be sure, but I think the word you're looking for is "kinematics", a division of classical mechanics, after statics and dynamics. -- Kenneth Kawamura
