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18 Cards in this Set
- Front
- Back
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Potential Energy |
the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
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Kinetic Energy |
energy that a body possesses by virtue of being in motion.
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Mechanical Energy |
is the sum of potential energy and kinetic energy.
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Conservation of Energy |
a principle stating that energy cannot be created or destroyed, but can be altered from one form to another.
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Work |
using force to move an object |
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Power |
the ability to do something or act in a particular way, especially as a faculty or quality. |
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Simple Machines |
any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever. |
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Lever |
a rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other. |
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Pulley |
a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights. |
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Incline Plane |
a plane inclined at an angle to the horizontal. |
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Wedge |
a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them. |
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Screw |
a short, slender, sharp-pointed metal pin with a raised helical thread running around it and a slotted head, used to join things together by being rotated so that it pierces wood or other material and is held tightly in place. |
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Wheel & Axle |
a simple lifting machine consisting of a rope that unwinds from a wheel onto a cylindrical drum or shaft joined to the wheel to provide mechanical advantage.
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Mechanical Advantage |
the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine. |
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Effort Force/Input Force |
The effort force is the force applied to a machine.
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Resistance Force/Output force |
The force applied to a load is called the output force. |
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Effort Distance/Input Distance |
The distance from the effort on a lever to the fulcrum.
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Resistance Distance/Output Distance |
The work input of a machine is equal to the effort force times the distance over which the effort force is exerted.
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