A body is rotating uniformly about a vertical axis fixed in an inertia

1.	A body is rotating 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 (b) horizontal and skew with the axis(c) horizontal and intersecting the axis(d) none of these.
Answer» Answer ⇒ Option (C). Horizontal and intersecting the axis. Explanation ⇒ According to the QUESTION, the body is rotating UNIFORMLY, THEREFORE, the particle which is not on the axis will be moving in a uniform circular motion. This circle will be horizontal with its center at the intersecting point with the axis. ∴ It will be having the radial ACCELERATION and hence a radial resultant force. Thus this force will be horizontal and intersecting the axis. *Hence, Option (c). ''Horizontal and intersecting the axis is correct''.* *Hope it helps.*

A body is rotating 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 (b) horizontal and skew with the axis(c) horizontal and intersecting the axis(d) none of these.

Answer»

Answer ⇒ Option (C). Horizontal and intersecting the axis.

Explanation ⇒ According to the QUESTION, the body is rotating UNIFORMLY, THEREFORE, the particle which is not on the axis will be moving in a uniform circular motion.

This circle will be horizontal with its center at the intersecting point with the axis.

∴ It will be having the radial ACCELERATION and hence a radial resultant force.

Thus this force will be horizontal and intersecting the axis.

Hence, Option (c). ''Horizontal and intersecting the axis is correct''.

Hope it helps.

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