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  1. 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 :
    1. 20 ms–1
    2. 30 ms–1
    3. 5 ms–1
    4. 10 ms–1
Correct Option: C

For banking tan θ =
V²
 = 1
90 × 10

V = 30 m/s


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