A fan rotates at 100 rpm. Find its angular velocity and linear velocity if tip of its blades is 0.20 m away from the axis of rotation.

Frequency = ʋ


ʋ = 100 rpm


= 100/60 s-1


= 5/3 Hz(s-1)


Angular velocity = ω


= 2*π*ʋ


= 2 × 3.14 × 5/3


= 10.47rad s-1
r = 0.20m


Linear velocity v = ω*r


= 10.47 × 0.20


= 2.094ms-1


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