A curved road of diameter 1*8 km is bank...

A curved road of diameter `1*8` km is banked so that no friction is required at a speed of 30 `ms^(-1)`. What is the banking angle ?

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Verified by Experts

` tan theta = (v^(2))/(rg)`
` ((30^(2)))/(10xx900)`
` = 1/10`
` rArr theta = tan ^(-1) (0*1)`

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