The 15-kg wheel with 150-mm outer radius and 115-mm centroidial radius of gyration is rolling without slipping down the 15° incline at a speed of 2 m/s when a tension T = 30 N is applied to a cable wrapped securely around an inner hub with a radius of 100 mm. Determine the time t required for the wheel to come to a stop if the tension is applied first in configuration (a) and then in configuration (b). The wheel is observed to roll without slipping throughout the entire motion for both cases.

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T (a) m, k T (b) To (r; 100 mm o = 150 mm 0 = 15°