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# If the Road of the Previous Problem is Horizontal (No Banking), What Should Be the Minimum Friction Coefficient So that Scooter Going at 18 Km/Hr Does Not Skid? - Physics

ConceptExamples of Circular Motion (Vehicle on a Level Circular Road, Vehicle on a Banked Road)

#### Question

If the road of the previous problem is horizontal (no banking), what should be the minimum friction coefficient so that scooter going at 18 km/hr does not skid?

#### Solution

If the road is horizontal (no banking),

we have :

$\frac{\text{mv}^2}{\text{R}} = \text{f}_\text{s}$

$\text{N = mg}$

Here, fs is the force of friction and N is the normal reaction.
If μ is the friction coefficient, we have :

$\text { Friction force }= \text{f}_\text{s} = \mu \text{N}$

$\text{So}, \frac{\text{mv}^2}{R} = \mu \text{ mg}$

Here,
Velocity = v = 5 m/s
Radius = R = 10 m

$\therefore \frac{25}{10} = \mu \text{g}$

$\Rightarrow \mu = \left( \frac{25}{100} \right) = 0 . 25$

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#### APPEARS IN

Solution If the Road of the Previous Problem is Horizontal (No Banking), What Should Be the Minimum Friction Coefficient So that Scooter Going at 18 Km/Hr Does Not Skid? Concept: Examples of Circular Motion (Vehicle on a Level Circular Road, Vehicle on a Banked Road).
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