A roller coaster starts from rest at a height h at the left side of a loop-the-loop,as shown in the figure.It is not attached to the track in anyway,and there is no friction from the track or from air resistance.If the radius of the loop is R = 6.0 m,what is the minimum height h for which the roller coaster will not fall off the track at the top of the loop?
A)21 m
B)18 m
C)15 m
D)12 m
E)8.5 m

Question

A roller coaster starts from rest at a height h at the left side of a loop-the-loop,as shown in the figure.It is not attached to the track in anyway,and there is no friction from the track or from air resistance.If the radius of the loop is R = 6.0 m,what is the minimum height h for which the roller coaster will not fall off the track at the top of the loop? 
A)21 m 
B)18 m 
C)15 m 
D)12 m 
E)8.5 m

Quizplus · Accepted Answer

The Answer of A roller coaster starts from rest at a height h at the left side of a loop-the-loop,as shown in the figure.It is not attached to the track in anyway,and there is no friction from the track or from air resistance.If the radius of the loop is R = 6.0 m,what is the minimum height h for which the roller coaster will not fall off the track at the top of the loop? 
A)21 m 
B)18 m 
C)15 m 
D)12 m 
E)8.5 m

A Roller Coaster Starts from Rest at a Height H