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A racing car travels on a track (without banking) ABCDEFA (Fig). ABC is a circular arc of radius 2 R. CD and FA are straight paths of length R and DEF is a circular arc of radius R = 100 m. The coefficient of friction on the road is µ = 0.1. The maximum speed of the car is 50 m s–1. Find the minimum time for completing one round.

Options

  1. A89.7s
  2. B86.3s
  3. C81.6s
  4. D88.97s

Correct answer

B. 86.3s

Step-by-step solution

Correct Option is : (B) 86.3s

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