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The distance between the rails of the tr...

The distance between the rails of the track is `1.67` m. How much the outer rail be elecated for curve of `0.5`km radius, so that a train moving with speed `54kmh^(-1)` can take safe turn on track.

A

80 mm

B

75 mm

C

60 mm

D

75 mm

Text Solution

Verified by Experts

The correct Answer is:
B
h elevation of outer rail over inner rail.
`h=(dv^(2))/(gr)`
`h=(1.67xx(15)^(2))/(10xx0.5xx1000)`
`=0.075m=75mm`
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