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Simple machines are elementary examples of kinematic chains that are used to model mechanical systems ranging from the steam engine to robot manipulators. The bearings that form the fulcrum of a lever and that allow the wheel and axle and pulleys to rotate are examples of a kinematic pair called a hinged joint.
Greek philosophers defined the screw as one of the simple machines and could calculate its (ideal) mechanical advantage. [15] For example, Heron of Alexandria (52 AD) listed the screw as one of the five mechanisms that could "set a load in motion", defined it as an inclined plane wrapped around a cylinder, and described its fabrication and uses ...
The mechanical advantage of a lever is the ratio of output force to input force. M A = F 2 F 1 = a b . {\displaystyle MA={\frac {F_{2}}{F_{1}}}={\frac {a}{b}}.\!} This relationship shows that the mechanical advantage can be computed from ratio of the distances from the fulcrum to where the input and output forces are applied to the lever ...
Mighty Machines is a Canadian educational children's television series that teaches about machines and how they work and the jobs they do. The show premiered in October 1994 on Family Channel . The show aired 39 episodes over three seasons until 2008.
The following outline is provided as an overview of and topical guide to machines: Machine – mechanical system that provides the useful application of power to achieve movement. A machine consists of a power source, or engine, and a mechanism or transmission for the controlled use of this power.
A mechanism is usually a piece of a larger process, known as a mechanical system or machine. Sometimes an entire machine may be referred to as a mechanism; examples are the steering mechanism in a car, or the winding mechanism of a wristwatch. However, typically, a set of multiple mechanisms is called a machine.
Simple machines are elementary examples of kinematic chains or linkages that are used to model mechanical systems ranging from the steam engine to robot manipulators. The bearings that form the fulcrum of a lever and that allow the wheel and axle and pulleys to rotate are examples of a kinematic pair called a hinged joint.
The mechanical advantage of a simple machine as defined as the ratio of the output force exerted on the load to the input force applied. The inclined plane the output load force is just the gravitational force of the load object on the plane, its weight F w {\displaystyle F_{\text{w}}} .