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When a rigid body is rotating, every poi...

When a rigid body is rotating, every point in it describes a circular path

A

Only if the axis of rotation passes symmetrically through the centre of gravity of the body

B

Only it the axis of rotation passes symmetric - cally through the body

C

Provided the axis passes through the edge of the body

D

Whatever be the axis of rotation

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze the motion of points on a rigid body when it is rotating about an axis. ### Step-by-Step Solution: 1. **Understanding Rigid Body Rotation**: - A rigid body is an object with a fixed shape that does not deform under the influence of forces. When a rigid body rotates about an axis, every point in the body moves in a circular path around that axis. 2. **Identifying the Axis of Rotation**: - The axis of rotation can be located anywhere in relation to the rigid body. It can pass through the center of mass, be off-center, or even be outside the body. 3. **Circular Motion of Points**: - Regardless of where the axis is located, each point on the rigid body will trace out a circular path. The radius of the circular path for each point depends on its distance from the axis of rotation. 4. **Examples of Different Axes**: - If the axis passes through the center of gravity (center of mass), all points will describe circular paths with varying radii based on their distance from the axis. - If the axis is off-center or at the edge, points still describe circular paths, but the radii will differ. 5. **Conclusion**: - Therefore, the correct conclusion is that every point in a rotating rigid body describes a circular path, regardless of the axis of rotation's location. This leads us to the answer that the correct option is: **"whatever be the axis of rotation."** ### Final Answer: The correct option is: **"whatever be the axis of rotation."** ---
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