A hollow sphere of radius 0.50 m, withrotational inertia I = 0.026 kgm2 about a line through its center of mass, rollswithout slipping up a surface inclined at 30° to the horizontal. At a certain initialposition, the sphere's total kinetic energy is 100 J.
(a) How much of this initial kinetic energy is rotational?
J
(b) What is the speed of the center of mass of the sphere at theinitial position?
m/s
(c) What is its total kinetic energy now?
J
(d) What is the speed of its center of mass now?
m/s