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20. A car of mass 1000 kg negotiates a b...

20. A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45°, the speed of the car is [CBSE AIPMT 2012] (a) 20 ms-(b) 30 ms - (c) 5 ms (d) 10 ms -1

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