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A car of mass 1000kg negotiates a banked...

A car of mass `1000kg` negotiates a banked curve of radius `90m` on a fictionless road. If the banking angle is `45^(@)` the speed of the car is:

A

`5 ms^(-1)`

B

`10 ms^(-1)`

C

`20 ms^(-1)`

D

`30 ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
`v=sqrt(rg tan theta)`
`implies v=sqrt(90xx10xxtan 45^(@))`
`=30 m//s`
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