A car has wheels with a 7 inch radius If each wheels rate of

A car has wheels with a 7 inch radius. If each wheel\'s rate of turn is 6 revolutions per second, find the angular speed in units of radians/second. 12 pi 6 pi/7 6 pi 3 pi 42 pi None of the above.

Solution

Since circumference = 2r,

A full circle is 2 radians. 6 rev/sec = 12 rad/sec

Answer is a)12 radians /second.