1.

Obtain the formula for the maximum safe speed (v_(max)) of a vehicle on a level curved road

Answer»

SOLUTION :(a)vehicleis shownmovingon ahorizontalcurvedroad. Themassof vehiclebe m andthe radiusbe R

FIGURE (b )showsthe vehiclemovingon a circulartrack
thefrictionbetweenthe tyre and theroadsurfaceprovides theneccesarycentripetalforce
In ordertomovesafely on thisroad
`(mv^(2))/( R )`forceisrequiredand itshouldbe EQUALTO maximumfrictionalforce
`(f_(g)) _(max)= mu_(s) N`
where `mu_(s)` is thecoefficientof staticfrictionbetweenthe tyresof VEHICLE andthe road.
the aboveformulashowsthat themaximumpermissiblelimitof thespeeddoes not dependuponthe massof vehicle or thepassengerto driver safelyon levelcircularroad.the abovegivenspeed calledmaximumpermissiblespeedshouldbe followed


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