Can an object with constant angular velocity experience net torque?

[hshphyss]

Can anyone help me with this question? Thank-you


An object rotates with a constant angular velocity. Can there be a net torque acting on the object? Why?

 

[andrewchang]

no-

$$\Sigma T=I\alpha$$

if there is a net torque on the object, there will be an angular acceleration.