A hollow sphere of radius 0.50 m, withrotational inertia I = 0.038 kgm2 about a line through its center of mass, rollswithout slipping up a surface inclined at 40° to the horizontal. At a certain initialposition, the sphere's total kinetic energy is 60 J.
(a) How much of this initial kinetic energy isrotational?
1Your answer is incorrect. J

(b) What is the speed of the center of mass of the sphere at theinitial position?
2Your answer is incorrect. m/s
Now, the sphere moves 1.0 m up the incline from its initialposition.
(c) What is its total kinetic energy now?
3Your answer is incorrect. J

(d) What is the speed of its center of mass now?
4 m/s

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