- #1

nesan

- 75

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## Homework Statement

The propeller blades of an airplane are 4.0 m long. The plane is getting ready for takeoff, and the propeller starts turning from rest at a constant angular acceleration. The propeller blades go through two revolutions between the fifth and the eighth second of the rotation. Find the angular speed at the end of 8.2 s.

## The Attempt at a Solution

v = r ω

It seems very easy but I'm stuck on how to find ω

I know there's a constant acceleration

so

ω = ω

_{ο}+ αt

Can someone point me in the right direction with how oto use

"The propeller blades go through two revolutions between the fifth and the eighth second of the rotation."

to get the acceleration.

Than you.