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NEET 2016 Physics question

PhysicsLaws of MotionNEET 2016

A car is negotiating a curved road of radius . The road is banked at an angle . The coefficient of friction between the tyres of the car and the road is . The maximum safe velocity on this road is:

Answer: (2)

Solution

At the maximum safe speed the car tends to slide up the incline, so friction acts down the slope. Resolve forces on the car (mass ): Vertical: . Horizontal (centripetal): \sin\cos$θ =

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Question ID VK-091879