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A disc of mass 4 kg, radius 0.5m and moment of inertia 3 kg-m2 rolls on a horizontal surface so that its centre moves with speed 5 m/see. Kinetic energy of the disc is | |
A. | 50 J [Wrong Answer] |
B. | 150 J [Wrong Answer] |
C. | 200 J [Correct Answer] |
D. | 400 J [Wrong Answer] |