JEE Main Physics question
The maximum speed of a car on a road turn of radius 30 m; if the coefficient of friction between the tyres and the road is 0.4; will be [MH-CET 1999, Similar AMU 2001, Kerala PET 1995, Kerala PET 2007]
Answer: (B)
Solution
v = √(μrg) = √(0.4×30×9.8) = √117.6 ≈ 10.84 m/s.