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the angle through which a rigid object rotates about a fixed axis.
Positive rotation = counterclockwise
negitive rotation = clockwise |
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the SI unit fo angular displacement. It equals to the central angle whose base is equal to a radius of a circle.
magnitude of one radian equals 57.3 degrees. |
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| rate of an angular displacement. ANd angular speed si a magnitude of an angular velocity. |
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| the length of a circular path traveled by an object during a circular motion |
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| tangential component of an instataneous velocity of an object. |
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| the time that is necessary for an object to complete one revolution around the moving object |
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| hte motion fo an object traveling in a circular path at a constant speed |
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| the net force that keeps and object in a circualr path. This net force is directed toward the center of a circular path. |
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| the acceleration that an objectmust have to stay in a circular path. ( it is always directed towards the center of the circualr path |
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| Newton's universal law of gravitation |
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| relation between a gravitational force and masses of objects participathing in a gravitational interaction and also between a gravitational force and a distance between these objects. |
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| Gravitational constant 6.67x10^-11 |
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| the coefficient of a proporitionality in the law of gravity. it equals a magnitude of a gravitional force between two like objects fo 1 kg mass each |
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| motion of planets of satellites along a closed path under the action of gravity |
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| Satellite's orbital speed |
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| the tangential speed of a satellite during it's orbital motion |
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| a vector physical quantity thatt characterizes the tendency of force acting on a rigid object to totate this object around a pivot or an axis fo rotation. ( the magnitude of torque equals a product of force times a lever arm |
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| the shortest distance between a pivot and a line of action of the force. IT's equal to the length fo a perpenrdicualr dropped form a pivot on the line of action of the force. |
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| a line drawn collinear with a force |
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| the type of equilibrium of an object having the axis of rotation. When an object is in totaionl equilibrum its net torque equals zero. |
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| the imaginary point associated with an object where the gravitational force si considered to act |
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| imaginaty point associtaed with an object where it's mass can be considererd to be concentrated |
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