A modern gran -prix racing car of masses m is travelling on a flat track in a circular arc of radius R with a speed `v`. If the coefficient of static friction between the tyres and the track is `mu_(s)`, then the magnitude of negative lift `F_(L)` acting downwards on the car is `:` ( Assume forces on the four tyres are identical and g = acceleration due to gravity )

Options

A. `m ((v^(2))/( mu_(S) R ) -g)`
B. `m ((v^(2))/( mu_(S) R ) +g)`
C. `m ( g - ( v^(2))/( mu _(S) R))`
D. `-m ( g + ( v^(2))/( mu _(S) R))`