If you see an object rotating, is there necessarily a net nonzero ...

[2125004343]

If you see an object rotating, is there necessarily a net nonzero torque acting on it?
  1.yes.
  2.only if it is rotating with a constant angular speed
  3.No, a net nonzero torque would not cause an object to rotate.
  4.only if the object's angular speed changes

Question 2

Complete the following sentence: The moment of inertia of an object
  1.depends on the rotational speed of the object.
  2.will be greater for a larger-massed object than for a smaller-massed object.
  3.is not a function of the object's mass.
  4.is a function of the axis about which the object is spun.

[tmlewis4706]

Answer to Question 1

4

Answer to Question 2

4

[2125004343]

Thank you!

[tmlewis4706]

Always glad to help...