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Rotational Position & Displacement definitions Flashcards

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Rotational Position & Displacement definitions
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  • Rotational Motion

    Movement around a central point, forming a circular path, described using angular position.
  • Angular Position

    Location in a circle, represented by a single angle, typically using the variable theta.
  • Angular Displacement

    Change in angular position, measured in radians or degrees, denoted as delta theta.
  • Radians

    A unit of angular measure where one radian is approximately 57 degrees.
  • Degrees

    A unit of angular measure where a full circle is 360 degrees.
  • Revolution

    A complete rotation around a circle, equivalent to 360 degrees or 2π radians.
  • Radial Distance

    Distance from the center of a circle to a point on its circumference.
  • Unit Circle

    A circle with a radius of one, used to define trigonometric functions.
  • Arc Length

    Linear distance along a circular path, calculated as r times theta.
  • Circumference

    The total linear distance around a circle, calculated as 2π times the radius.
  • Linear Displacement

    Change in linear position, linked to angular displacement by the equation delta x = r delta theta.
  • Clockwise

    Direction of rotation that follows the movement of a clock's hands, considered negative in angular terms.
  • Counterclockwise

    Direction of rotation opposite to a clock's hands, considered positive in angular terms.
  • Origin

    Fixed starting point in rotational motion, where theta equals zero, typically on the positive x-axis.
  • Theta

    Symbol used to represent angular position or displacement in rotational motion.