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A wheel rotates counterclockwise horizontally. What is the direction of angular velocity, w? What is the...

A wheel rotates counterclockwise horizontally. What is the direction of angular velocity, w? What is the direction of angular acceleration, a, if the angular velocity is decreasing in time?
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Answer #1

Angular velocity is the rate of angular displacement about an axis. Its direction is determined by right hand rule.

According to right hand rule, if you hold the axis with your right hand and rotate the fingers in the direction of motion of the rotating body then thumb will point the direction of the angular velocity.

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