As per your syllabus, a cyclist taking a R=3 m turn at 18 km/h (μ_s = 0.1) is in which condition?
ASafe (v² ≤ μ_s R g)
BNo friction needed at all
CSlips (v² > μ_s R g)
DExactly at limit
Answer & Solution
Correct answer: C. Slips (v² > μ_s R g)
syllabus Ex 4.10: μ_s R g = 0.1 × 3 × 9.8 = 2.94 m²/s² but v² = 5² = 25 m²/s².
v² ≫ μ_s R g, so cyclist slips.
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