How can the angular acceleration of a rotating mechanical link be calculated___________________?
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Answer: B. tangential component of acceleration with length of link
Explanation
Angular acceleration of a rotating mechanical link is calculated by dividing its tangential acceleration by its length. This relationship stems from rigid body kinematics where tangential acceleration equals radius multiplied by angular acceleration. Dividing the linear tangential component by the link radius yields the exact angular acceleration value. Every point on a rotating rigid link experiences both radial centripetal acceleration and tangential acceleration components. Tangential acceleration accounts for any changes in the rotational speed of the spinning mechanical link. Link length acts as the geometric radius connecting the center of rotation to the point of interest.
Centripetal acceleration relates to radial inward forces rather than the angular acceleration of the link. Resultant acceleration combines both radial and tangential vectors, making direct division by length incorrect. Options stating none of the above are invalid because the tangential component method is standard engineering practice.
- Subject
- Engineering
- Category
- Mechanical Engineering
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- —
- Difficulty
- medium
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