A 10 kg toy car moves on a circular track of radius 10√3 m banked at 30°. At the maximum safe constant speed, the normal reaction is N. Find N√3 numerically.
Physics · Circular Motion · friction and circular motion
JEE Advanced

Question

A 10 kg toy car moves on a circular track of radius 10√3 m banked at 30°. At the maximum safe constant speed, the normal reaction is N. Find N√3 numerically.

G1 Physics · Accepted Answer

The source PDF, as printed, omits the numerical value of the coefficient of friction in this question. Therefore the normal reaction cannot be obtained uniquely from the printed statement alone. The source answer key gives the required numerical value N√3=300. So the stored correct answer is 300. A complete force-balance derivation requires the missing coefficient of friction.