Do All Points on a Rotating Rigid Disk Experience Centripetal Acceleration?

[sneez]

Does a rotating rigid disk, for example, feel centripetal acceleration at each point of its body?

or more general: Is centripetal acceleration only for non-rigid bodies? (ball on a string, ex)?

 

[cesiumfrog]

yes. or rather, it "feels" the centrifugal force..

 

[charng]

I can confirm that a rotating rigid disk does indeed experience centripetal acceleration at each point of its body. This is because centripetal acceleration is defined as the acceleration towards the center of a circular path, and this applies to all points on a rotating rigid disk.

In fact, centripetal acceleration is not limited to non-rigid bodies such as a ball on a string. It is a fundamental principle of circular motion and applies to all objects, regardless of their rigidity.

This concept can be better understood by considering the forces acting on a rotating rigid disk. The centripetal force, which is responsible for maintaining the circular motion, acts on every point of the disk and is directed towards the center. As a result, every point on the disk experiences a centripetal acceleration towards the center.

In summary, centripetal acceleration is not limited to non-rigid bodies and applies to all objects, including rotating rigid disks. It is a crucial concept in understanding circular motion and is present at every point of a rotating object.