A car negotiates an unbanked circular curve of radius . If the coefficient of static friction is (take ), what is the maximum speed without skidding?
Answer and explanation
Correct answer: A.
- Step 1: Centripetal force is provided by static friction: .
- Step 2: Cancel mass : .
- Step 3: Substitute values: .
Answer
15.6 m/s.
Why not the others: '' uses ; '' uses ; '' uses .
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