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**Weezergames** First Problem.

The Force needed to keep a car from skidding on a curve vasies directly as teh weight of the car and the square of the and inversely as the radius of the curve. It requiers 266lb of force to keep a 2200 lb car traveling at 30 mph from skidding on a curve of radius 500 ft. How much force is required to keep a 3000lb car traveling at 45 mph from skidding on a curve of radius 400 ft.

Ive been having trouble doing this problem. I know that the formula is F=__kws2__

r

the r goes under kws2

i need help solving this.