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A roller coaster is designed such that r...

A roller coaster is designed such that riders experience "weightlessness" as they go round the top of a hill whose radius of curvature is `20m`. The speed of the car at the top of the hill is between

A

14m/s and 15m/s

B

15m/s and 16m/s

C

16m/s and 17 m/s

D

13 m/s and 14 m/s

Text Solution

Verified by Experts

The correct Answer is:
A
`Mg-N=(MV^(2))/R`
For Weight lessness `N=0`
`v=sqrt(gR)=14.14ms^(-2)`
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NARAYNA-GRAVITATION-EXERCISE -III
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