A solid sphere of mass m and radius a starts moving from point A above the resident hemisphere to radius 3a from a state of stillness and always descends on the surface of the hemisphere with its complete rotation (as shown). How many times the total kinetic energy of a solid sphere just before it separates from the surface of a stationary hemisphere is mga? (I em =ma?) 8 24 28 A) 17 B) 17 C) 17 32 DI 17 3a

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