The speedometer on a car actually measures the rotational speed of the axle and converts that to the linear speed of the car, assuming the car’s tires diameter is 0.62 m. what is the rotational speed of the axle when the car is traveling 20 m/s?

Explanation :

It is given that,

The diameter of the car's diameter, d = 0.62 m

Radius, r = 0.31 m

Speed of the car, v = 20 m/s

We know that the relation between the angular velocity and linear velocity is given by :

Where is angular velocity

Hence, this is the required solution.

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