explain friction force and rotational motion.
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The tangential friction force constitutes the torque opposing the rotation. There is a corresponding linear deceleration of the wheel.Since there is no motion in the vertical direction in the direction of force, there is no vertical linear acceleration involved.
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friction force between 2 surfaces that are sliding across each other. the amount of friction force depends on materials from which 2 surfaces are made .
rotational motion is motion of an object around a circular path in a fixed orbit
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