Laws of Motion - Result Question 63

63. What will be the maximum speed of a car on a road turn of radius 30m if the coefficient of friction between the tyres and the road is 0.4 (Take g=9.8m/s2 )

[1995]

(a) 10.84m/s

(b) 9.84m/s

(c) 8.84m/s

(d) 6.84m/s

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Answer:

Correct Answer: 63. (a)

Solution:

  1. (a) r=30m and μ=0.4.

vmax=μrg=0.4×30×9.8=10.84m/s



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