Engineering Board Exam Reviewer · Physics · hard
What minimum coefficient of static friction is needed for a car to round a flat curve of radius 50 m at 20 m/s without skidding? (g = 9.81 m/s2)
- 0.041
- 0.815
- 1.226
- 8.000
Answer
B. 0.815
Solution
= v2/(rg) = 400/(50 × 9.81) = 0.815.
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