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## Homework Statement

During a sustained wind the blades on a two blade horizontal–axis wind turbine is

turning with an angular velocity of 5 rad/s. If initially the blades have an angular velocity of 2

rad/s, determine the distance point P on the tip of the blade has travelled in 3.0 seconds. Also,

what is the magnitude of the acceleration of this point when t = 3.0 seconds.

Point P is the Tip of the blade. Radius is 4.55m.

## Homework Equations

[/B]

where w=omega (angular velocity in rad/s)

w=v/r

L=Iw

## The Attempt at a Solution

[/B]

Initially we have 2rad/s

wr=v

2rad/s * 4.55m=9.1 m/s

5rad/s *4.55m= 22.75m/s

I don't understand how to answer the question considering there is no information given on how fast it accelerates to 5rad/s. Does it instantly go to 5rad/s

Any insight?