A long thin rod of length 2L rotates with a constant angular acceleration of 10 rad/s2 about an axis that is p

Question

A long thin rod of length 2L rotates with a constant angular acceleration of 10 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) 4:1
d) 1:4
e) 2:1

Answer 1

Assuming the rod is rigid, all points on the rod have the same angular velocity, so the answer is a).