Question

A car whose tire have radii 50cm travels at 20km/h. what is the angular velocity of the tires?

Answer 1

• Radius=r=50cm=0.5m
• Velocity=20km/h=v

Convert to m/s

`\\ \sf\longmapsto v=20* 5/18=5.5m/s`

We know

`\boxed^2)`

`\\ \sf\longmapsto \omega=(0.5(5.5))/(|0.5|^2)`

`\\ \sf\longmapsto \omega=(2.75)/(0.25)`

`\\ \sf\longmapsto \omega=11rad/s`