An insect trapped in a circular groove of radius 12 cm moves along the groove steadily and completes 7 revolutions in 100 s.
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This is an example of uniform circular motion. Here, 
. The angular speed omega is given by
The linear speed 
is:
The direction of velocity v is along the tangent to the circle at every point. The accleration is directed towards the center of the circle. Since, this direction changes continuously, acceleration here is not a constant vector. However, the magnitude of acceleration is constant.
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