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A car is making a turn at speed v. The radius of the turn is r and the centripetal force on the car is F.If the car rounds the same curve at speed 2v, therequired centripetal force is |
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Answer» tion:Any net force causing uniform CIRCULAR MOTION is called a centripetal force. The direction of a centripetal force is toward the center of curvature, the same as the direction of centripetal acceleration. According to Newton’s second law of motion, net force is mass TIMES acceleration: net F = ma. For uniform circular motion, the acceleration is the centripetal acceleration—a = ac. THUS, the magnitude of centripetal force Fc is Fc = mac.By using the expressions for centripetal acceleration ac from ac=v2r;ac=rω2, we GET two expressions for the centripetal force Fc in terms of mass, velocity, angular velocity, and radius of curvature: Fc=mv2r;Fc=mrω2.You may use whichever expressioni hope it useful for.make me as brainliest answer |
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