a) Find the angular velocity of a wheel that rotates 6 times every 4 seconds.

b) What is the tangential velocity of the outside of the wheel if the radius is 15 cm?

3 answers

a) 6 * 2 π / 4 = ? rad/s

b) ? rad/s * 15 cm/rad
a. Va = 6rev/4s * 6.28rad/rev = 9.42 rad/s.

b. Circumference = pi*2r = 3.14*0.30m = 0.942 meters.

V = 9.42rad/s. * 0.942m/6.28rad = m/s = Linear or Tangential velocity.
calculate the average angular velocity of the spinning wheel that rotates 15 times in 8 mins