A solid cylinder of mass n1 and radius R can spin about its
axis. Around the cylinder is wound a string, which is attached to another
object of mass n2. What is the acceleration of the hanging object.
If the acceleration is g/n3, what is n3? Treat the sting
as massless. The rotational inertial about the center of the disk is
Icm=n1R2/2. Note that n1 and
n2 are in the same mass units, and n3 is unitless.
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