4. Railway tracks are banked on curves so that A.Necessary centrifugal force may be obtained from the horizontal component of the weight of the train B.No frictional force may be produced between the tracks and the wheels of the train C.Necessary centripetal force may be obtained from the horizontal component of the weight of the train D.The train may not fall down inwards
Option C Solution: Railway tracks are banked at the curves so that the necessary centripetal force may be obtained from the horizontal component of the reaction on the train.
