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A body is weighed on a spring balance in...

A body is weighed on a spring balance in the wagon of a train travelling round a bend in the track which is banked in the usual way. The balance shows increase in weight by fraction n. The balance can revolve about its support point and remains at right angles to the floor of the wagon when rounding the bend when the train is travelling at speed `v` ?

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The correct Answer is:
`r=(v^(2))/(gsqrt(n(n+2)))`
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NN GHOSH-CENTRIPITAL AND CENTRIFUGAL FORCES-Exercises (B)
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