Question

38) The tires on a car have a radius of 31 cm. What is the angular speed of these tires when the car is driven at 15 m/s?

Answer 1

Given that radius of tyre is, r= 31 cm = 0.31 m and linear speed of car is, v = 15 m/s

To find the angular speed.

Formula to find angular speed,

`\omega=(v)/(r)`

Substituting the values, we get angular speed,

`\begin{gathered} \omega=(15)/(0.31) \\ =48.38s^(-1) \end{gathered}`

Thus, angular speed is 48.38 per second.