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Hinge
A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two ob…
Types of Hinge Mechanisms | eHow
The hinge is one of the most important pieces of hardware you’ll find inside or outside your house. A hinge is simply two leaves held…
Ten Fold: The Levers
video 2:25 great demonstration of hinges and levers

paper airplanes – engineering 4 kids
Elevator is the aeronautical term for the hinged flap at the tail section of a plane that causes it to either climb (gain altitude) or di…
wing – engineering 4 kids
Ailerons – hinged flaps attached to the trailing edge of an airplane wing. They are used to control the aircraft in roll. The two ailer…
lever – engineering 4 kids
Pushing down on one end of a lever results in the upward motion of the opposite end of the fulcrum. Examples: Door on Hinges, Seesaw, Ham…
craft stick mouse trap – engineering 4 kids
a trigger is woven under the hinge and into the arm, thus holding it down. If the trigger is disturbed enough, it may slip off of the arm…
dump truck – engineering 4 kids
A typical dump truck is equipped with an open-box bed, which is hinged at the rear and equipped with hydraulic pistons to lift the front,…
Ferris wheel – engineering 4 kids
In 3-dimensional space, for a given rotational movement there is more than one fixed point: these form a line known as the axis of rotati…