If the axis of rotation passes through the body and the body moves around itself then the motion is called:
Correct answer: A. Spin motion
- A. Spin motion
- B. Orbital motion
- C. Rectilinear motion
- D. Translatory motion
Explanation
When a body rotates about an axis passing through itself, its particles move around that internal axis, and the motion is called spin motion. Orbital motion occurs when a body revolves around an axis or point outside itself, so it is the likely alternative students choose when they confuse spin with revolution.
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About Angular and Linear Quantities
Rotational motion relates angular displacement, angular velocity and angular acceleration to linear displacement, tangential velocity and tangential acceleration through the radius. Questions use radians, v equals r omega and tangential acceleration, while distinguishing tangential velocity from centripetal acceleration and angular quantities from their linear counterparts.
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