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Physics - Section 1 :: Discussion
| 45. | Railway tracks are banked on curves | |
| A. | necessary centrifugal force may be obtained from the horizontal component weight of the train | |
| B. | to avoid frictional force between the tracks and wheels | |
| C. | necessary centripetal force may be obtained from the horizontal component of the weight of the train | |
| D. | the train may not fly off in the opposite direction | |
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