First slide

Banking of road

Question

A motorcyclist riding at 36 kmh^-1 has to turn a corner. Find the least radius of the curve, he should
follow for safe travelling, if the coefficient of friction between the tyres and the road is 0.2.

Moderate

A

10 m
B

25 m
C

50 m
D

100 m

Solution

For safe circular turn, $v = \sqrt{μ r g}$
$\Rightarrow r = \frac{v^{2}}{μ g} \Rightarrow r = \frac{(10)^{2}}{0.2 \times 10} = 50 m$

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