A measuring stick on a rapidly rotating disk will not appear to shrink if it is oriented along the
A)circumference.
B)radius.
C)either of these
D)neither of these

Question

Quizplus · Accepted Answer

The shrinkage of an object is dependent on its orientation with respect to the rotation. If the object is oriented along the circumference, it experiences a greater velocity and undergoes length contraction. However, if the object is oriented along the radius, it moves in a circular path with constant speed and does not experience any length contraction. Therefore, a measuring stick on a rapidly rotating disk will not appear to shrink if it is oriented along the radius.

A Measuring Stick on a Rapidly Rotating Disk Will Not