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A train has to negotiate a curve of radi...

A train has to negotiate a curve of radius 2000 m. By how much should the outer rail be raised with respect to inner rail for a speed of `72"km h^(-1)`. The distance between the rails is 1 m.

A

`4.4` cm

B

9 cm

C

`8.8` cm

D

`3.3` cm

Text Solution

Verified by Experts

The correct Answer is:
C
`v=96xx(5)/(18)ms^(-1)=26.66ms^(-1)`

`tan theta=(v^(2))/(Rg)=0.088`
`0.088=(h)/(1)`
`therefore" "h=0.088m=8.8cm`
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