Question

The radius of curvature of railway line at a place is 200 m. If the distance between the rail is 1.6 m and the outer rail is raised by 0.08 m above the inner rail .The speed of the train for which there is no side pressure on the rails `(g=10 m//s^(2))`
A. `5 m//s`
B. `10 m//s`
C. `15 m//s`
D. `20 m//s`

Answer 1

Correct Answer - B
`r=200m,l=1.6m,h=0.08 m `
`v^(2)=(rgh)/(l)=(200xx10xx0.08)/(1.6)`
`v^(2)=(2xx80)/(1.6)=100`
`v=10 m//s`.