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A mass is revolving in a circle which is in the plane of the paper. The direction of angular acceleration is (a) Upward to the radius (b) Towards the radius (c) Tangential (d) At right angle to angular velocity

A mass is revolving in a circle which is in the plane of the paper. The direction of angular acceleration is
(a) Upward to the radius
(b) Towards the radius
(c) Tangential
(d) At right angle to angular velocity

Grade:12

1 Answers

Vikas TU
14149 Points
one year ago
If the increase in angular velocity appears clockwise with respect to an observer, then the angular acceleration vector points away from the observer. As in this case, mass is revolving in a circle that lies on the plane of a paper so angular acceleration will be perpendicular to the plane of paper along the axis.

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