There is a spool with mass M and its inertia is I = (MR^2)/3. The spool’s dimensions are: the outer radius is R and inner radius (where the thread is…

There is a spool with mass M and its inertia is I = (MR^2)/3. The spool’s dimensions are: the outer radius is R and inner radius (where the thread is wrapped) is R/2.

If you pull the cord on a spool with force T , what is the spool’s acceleration?