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Translational Equilibrium Revisited

A body is rot...

Question

A body is rotating non uniformly about a vertical axis fixed in an inertial frame. The resultant force on a particle of the body not on the axis is

A

Vertical

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B

Horizontal and skew with the axis

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C

Horizontal and intersecting the axis

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D

None of these

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Solution

The correct option is B Horizontal and skew with the axis
When the disc is rotating non - uniformly, it has both centripetal and tangential acceleration. So, resultant force will be along resultant of these two accelerations.
Thus, option (B) is correct.

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