Uniform Circular Motion on a racetrack

[cle102]

Homework Statement

A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to the ground. For a speed of 34.0 m/s, at what value of the distance d should a driver locate his car if he wishes to stay on a circular path without depending on friction?

Relevant Equations

a=v^2/R
F꜀=(mv^2)/R
μg = v^2/R

Not sure what I'm doing here. Not sure how to continue? Please help.

Thank you in advance!

 

[kuruman]

First solve the other problem you posted, and you will see how to approach this one. The strategy is the same, only the unknown quantities are different.