1
$\begingroup$

Possible Duplicate:
Linear velocity word problems?

How would I solve the following problem?

If a car wheel 78 cm in diameter rotates at 600 r/min what is the speed of the car in km/h?

  • 0
    Nobody told you that it has contact with the ground...2012-07-31

1 Answers 1

1

radius of the wheel=$0.39$m. Angular velocity=$600*2\pi/60$ rad/sec.Assuming the case of pure rolling, velocity=$r*\omega$ = $20*0.39.\pi \approx 24.5 m/sec = 88.2 km/hr$.