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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

`30ms^(-1)`

B

`5ms^(-1)`

C

`10ms^(-1)`

D

`20ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`tan45^(@)=(v^(2))/(Rg)=(v^(2))/(90xx10)`
So, `V=30m//sec`
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