A race car is negotiating a curve on a banked track. There is a certain speed \(v_{\text {critical }}\) at which friction is not needed to keep the car on the track in the curve. (This is the speed the car should travel if there is an oil slick on the track, for example.) Draw a free-body diagram showing the forces exerted on the car when it is moving at speed

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(a) v=Vcriticals (b) v > Veritical, and (c) v < Veritical