What Forces Act on a Descending Cylinder Attached to a Tape?

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The discussion focuses on the forces acting on a descending cylinder attached to a tape. Key forces identified include the tension in the tape and the gravitational force acting downward. The participant expresses uncertainty about the direction of these forces and whether additional forces apply, emphasizing that the question specifically asks for forces rather than torques. Clarification is sought on the correct identification and direction of these forces. Understanding these forces is crucial for analyzing the motion of the cylinder as it unwinds from the tape.
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Homework Statement



A cloth tape is wound around the outside of a uniform solid cylinder (mass M, radius R) and fastened to the ceiling as shown in the diagram below. They cylinder is held with the tape vertical and then released from rest. as the cylinder descends, it unwinds from the tape without slipping. The moment of inertia of a uniform solid cylinder about its center is 1/2MR^2.

diagram: http://imgur.com/h0v07

what are the forces acting on the cylinder?

Homework Equations




The Attempt at a Solution



http://imgur.com/eyjPP

so far I'm pretty sure there should be tension in the tape, force of gravity, some torque and (mv^2)/r but I have no clue which directions they should go if they even apply
 
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The question is asking about only forces, not torques.
 
so then, would these be all of the forces?

http://imgur.com/ofZTp
 

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