A train has to negotiate a curve of radius 2000m. By how much should be the outer rail be raised with respect to the inner rail for a safe travelling speed of 72kmh−1?
The distance between the rails is 1m. (Take g=10m/s2)
A
1cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
3cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
2cm
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
4.5m
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is C2cm
Given, v=72km h−1=72×518=20m s−1
Radius of curve, R=2000m;l=1m