Rotational Motion Vocabulary – Flashcards
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Newton's 2nd Law of Rotational Motion
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Angular acceleration is directly proportional to the net torque and inversely proportional to the moment of inertia
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Angular Displacement
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As an object rotates, the change in angle-
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Angular Velocity
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Dividing angular displacement by the time it takes for the displacement to occur
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Center of Mass
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The point on an object that moves in the same way that a point particle would move
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Moment of Inertia
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Resistance to rotation
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Radian
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Equal to 57.3 degrees
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Centrifugal Force
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Apparent force that seems to pull an object onto a spinning platform toward the outside of the platform
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Angular Acceleration
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Dividing the change in angular velocity by the time it takes to make the change
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Torque
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the measure of how effectively a force causes a rotation
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Lever Arm
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The perpendicular axis from the axis of rotation to the point where the force is exerted
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Coriolis Force
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When the horizontal motion of an object in a rotating frame of reference seems to deflect, the apparent force is---
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The angular displacement of an object is measured in-
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radians
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The moment of inertia-
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is the rotational equivalent of mass
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Which factor does the torque on an object not depend on?
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The object's angular velocity
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A net torque applied to an object causes-
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The angular velocity of the object to change.
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X
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Theta
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V
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Omega
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a
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Alpha
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Mass is equivalent to
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Inertia
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Force is equivalent to
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Torque
