A long thin rod of length 2L rotates with a constant angular acceleration of 8.0 rad/s2 about an axis that is perpendicular to the rod and passes through its center.
-What is the ratio of the angular speed (at any instant) of a point on the end of the rod to that of a point a distance L/2 from the end of the rod?
A)1:1
B)1:2
C)2:1
D)4:1
E)1:4

Question

Quizplus · Accepted Answer

The angular speed is the same for all points on the rod because they all rotate together as a rigid body. Therefore, the ratio of the angular speed of a point on the end of the rod to that of a point a distance L/2 from the end is 1:1.

A Long Thin Rod of Length 2L Rotates with a Constant