What kind of motion forces are experienced by the center of gravity of a moving link_________________?
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Answer: D. both angular and linear accelerations
Explanation
General plane motion combines translation and rotation, subjecting moving bodies to both linear and angular accelerations. The center of gravity experiences linear acceleration due to translational movement along its curved or straight path. Simultaneously, the link rotates about its center of mass, introducing distinct angular acceleration components. General plane motion is defined as motion in which all points of a rigid body move parallel to a fixed plane. Newton second law governs the linear acceleration of the center of mass under the action of resultant forces. Euler equations of motion relate the angular acceleration of the link to the applied resultant torques.
Assuming no acceleration would incorrectly describe a stationary link or one moving at constant velocity. Limiting motion to linear acceleration ignores the rotational aspect inherent in general planar mechanisms. Focusing solely on angular acceleration neglects the translational movement of the center of gravity through space.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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