Starting from Rest at the Same Time,a Coin and a Ring

Multiple Choice

Starting from rest at the same time,a coin and a ring roll down an incline without slipping.Which reaches the bottom first?

A) The ring reaches the bottom first.
B) The coin reaches the bottom first.
C) They arrive at the bottom simultaneously.
D) The winner depends on the relative masses of the two.
E) The winner depends on the relative diameters of the two.