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Radius of level circular track is 20 m. ...

Radius of level circular track is 20 m. If co­efficient of friction is 0.25, then what will be maximum safe speed ? (g = 9.8 `ms^(2)`)

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`g= 9.8ms^(2)`
`r=20 m`
` g = 9.8 ms^(-2)`
`v_(ax) = sqrt(mu rg )`
`= squr(0.25 xx 20 xx 9.8 ) `
`=7m//s`
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