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  2. Angular velocity - Wikipedia

    en.wikipedia.org/wiki/Angular_velocity

    In physics, angular velocity (symbol ω or , the lowercase Greek letter omega), also known as angular frequency vector, [1] is a pseudovector representation of how the angular position or orientation of an object changes with time, i.e. how quickly an object rotates (spins or revolves) around an axis of rotation and how fast the axis itself changes direction.

  3. Rotational frequency - Wikipedia

    en.wikipedia.org/wiki/Rotational_frequency

    Rotational frequency, also known as rotational speed or rate of rotation (symbols ν, lowercase Greek nu, and also n), is the frequency of rotation of an object around an axis. Its SI unit is the reciprocal seconds (s −1 ); other common units of measurement include the hertz (Hz), cycles per second (cps), and revolutions per minute (rpm).

  4. Piston motion equations - Wikipedia

    en.wikipedia.org/wiki/Piston_motion_equations

    The frequency of the crankshaft's rotation is related to the engine's speed (revolutions per minute) as follows: ν = R P M 60 {\displaystyle \nu ={\frac {\mathrm {RPM} }{60}}} So the angular velocity ( radians /s) of the crankshaft is:

  5. Rotation around a fixed axis - Wikipedia

    en.wikipedia.org/wiki/Rotation_around_a_fixed_axis

    Change in angular displacement per unit time is called angular velocity with direction along the axis of rotation. The symbol for angular velocity is and the units are typically rad s −1. Angular speed is the magnitude of angular velocity.

  6. Angular frequency - Wikipedia

    en.wikipedia.org/wiki/Angular_frequency

    A sphere rotating around an axis. Points farther from the axis move faster, satisfying ω = v / r.. In physics, angular frequency (symbol ω), also called angular speed and angular rate, is a scalar measure of the angle rate (the angle per unit time) or the temporal rate of change of the phase argument of a sinusoidal waveform or sine function (for example, in oscillations and waves).

  7. Tangential speed - Wikipedia

    en.wikipedia.org/wiki/Tangential_speed

    (Angular speed and angular velocity are related to the rotational speed and velocity by a factor of 2 π, the number of radians turned in a full rotation.) Tangential speed and rotational speed are related: the greater the "RPMs", the larger the speed in metres per second. Tangential speed is directly proportional to rotational speed at any ...

  8. Kinematics - Wikipedia

    en.wikipedia.org/wiki/Kinematics

    Angular velocity: the angular velocity ω is the rate at which the angular position θ changes with respect to time t: = The angular velocity is represented in Figure 1 by a vector Ω pointing along the axis of rotation with magnitude ω and sense determined by the direction of rotation as given by the right-hand rule.

  9. Circular motion - Wikipedia

    en.wikipedia.org/wiki/Circular_motion

    Figure 1: Velocity v and acceleration a in uniform circular motion at angular rate ω; the speed is constant, but the velocity is always tangential to the orbit; the acceleration has constant magnitude, but always points toward the center of rotation. Figure 2: The velocity vectors at time t and time t + dt are moved from the orbit on the left ...