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EA Physics Unit 7
Circular Motion
| Term | Definition |
|---|---|
| amplitude | The maximum displacement from equilibrium |
| equilibrium | A state in which opposing forces in a system are equally balanced |
| period | The time that it takes a complete cycle to occur |
| frequency | The number of cycles or vibrations per unit of time. |
| pendulum | A hanging mass that swings back and forth when pulled to one side and let go. |
| simple pendulum | A specific type of pendulum with a mass hanging from a string or rod with negligible mass about a friction-less pivot. |
| negligible | So unimportant or small that it can be disregarded |
| cycle | A single unit of motion that repeats |
| gravitational force | The mutual force of attraction between particles of matter |
| mutual | A feeling or action experienced by two objects. |
| G | The universal gravitational constant |
| g | The acceleration due to gravity or gravitational field strength. Near Earth's surface, this value is 9.81 m/s/s. |
| gravitational field strength | A value that represents the strength of gravity at a specific location in the universe. Measured in N/kg (which is equivalent to m/s/s), this is another name for acceleration due to gravity. |
| gravitational field | The field of attractive force caused by gravity near a large mass |
| field | An area of space where something (a force) can be felt. |
| newton's universal law of gravitation | States that every mass exerts a force of attraction on every other mass. The strength of the force is directly proportional to the product of the masses divided by the square of the distance between them. |
| uniform circular motion | Any motion in which an object is moving along a curved path at constant speed |
| centripetal | center seeking |
| centripetal acceleration | The acceleration directed toward the center of a circular path (not due to a change in speed, but due to a change in direction of the object). |
| tangential speed | Linear speed along a curved path. The instantaneous magnitude of a revolving object's velocity. |
| centripetal force | The net force required to keep an object moving in a circular path. |
| centrifugal force | An apparent outward force on an object during circular motion caused by inertia. This is a fictitious force (it is not a force, but a sensation you feel) |
Created by:
ehansen_eak12
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