engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Motion in Two and Three Dimensions Circular motion
The co-effiicent of friction between the road surface and the tyre of an automobile is μ. At what speed v, the automobile can travel safely without skidding around a curve of radius r. Take m as mass of automobile and g as acceleration due to gravity.
1
\(v=\sqrt{m\ g\over \mu\ r}\)
2
\(v=\sqrt{\mu\ g\ r}\)
3
v = μ g r
4
\(v=\sqrt{\mu\ r\over m\ g}\)