A wheel has in 3.0-kg rim and four spokes, each of mass 1. Find the kinetic energy of the wheel when it is rolling at 6.0 m/s on a horizontal...

A wheel has in 3.0-kg rim and four spokes, each

of mass 1.2 kg. Find the kinetic energy of the

wheel when it is rolling at 6.0 m/s on a

horizontal surface. (Hint: each spoke can be

modeled as a uniform rod rotating around its

end.)