A car is moving on a horizontal curved road with radius 50 m. The approximate maximum speed of car will be, if friction between tyres and road is 0.34. [Take g = 10 m s⁻²]
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A car is moving on a horizontal curved road with radius 50 m. The approximate maximum speed of car will be, if friction between tyres and road is 0.34. [Take g = 10 m s⁻²]

G1 Physics · Accepted Answer

For maximum safe speed on an unbanked road, friction supplies centripetal force: μmg = mv²/r. Hence v(max) = √(μrg) = √(0.34 × 50 × 10) ≈ 13 m s⁻¹.