Final answer:
Circular runout applies radial tolerance to each circular element of the toleranced feature. This ensures the entire feature remains consistently positioned relative to a datum axis throughout a full rotation.
Step-by-step explanation:
Circular runout applies radial tolerance to each circular element of the toleranced feature. The correct answer to the given question is A) Radial tolerance. When we talk about circular runout in engineering and manufacturing, we are referring to a geometric dimensioning and tolerancing (GD&T) control. It measures the variation of a feature in relation to a datum axis as the part is rotated — this means that the circular element of the part must remain within the defined radial tolerance zone relative to the datum axis over the entire 360-degree rotation.
To provide a broader understanding, consider centripetal acceleration, which plays a significant role in circular motion. According to Figure 10.5, centripetal acceleration occurs as the direction of velocity changes and is perpendicular to the circular motion. Also, it is important to note that the tangential velocity vector is always perpendicular to the radius of the circular path, as shown in the relative orientation of these vectors during uniform circular motion.