just verify my working in 1st case the speed is 2 much so friction comes into play then Nsin@+un=mv2/r Ncos@=mg in second case friction is helping centrepital force Nsin@=mv2/r+un ncos@=mg just verify wether in both cases ncos@=mg
From shadows a light shall spring
Renewed shall be blade that's broken
The crown less again shall be king.