8. The reel shown in the figure below hes a radius R and moment of inertia 1. The cord and che spring have no mass. The block has a mass m. The spring has a spring constant of k. The reel is wound counter clockwise so that the so that the spring stretches a distanced from its unstretched position. It is then released from rest. What is the angular speed of the reel when the spring returns to the unstretched position. There is no friction. 2mgosind+k d b. 2 modsin 0+k d' a. 2modsin S+1 d' C. d. 1 +m R