A circular disc rolls down an inclined plane. The ration of rotational kinetic energy to total kinetic energy is 

a) 
b) 
c) 
d) 
A circular disc rolls down an inclined plane. The ration of rotational kinetic energy to total kinetic energy is 

a) 
b) 
c) 
d) 
(b) The ratio of rotational kinetic energy to total kinetic energy is The moment of inertia of a ring =
