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OLEGan [10]
3 years ago
7

An engineer is testing a large wind turbine that is used generating energy. Intially the large wind blades are locked in place a

nd not rotating. In a steady wind, the engineer releases the blades and they begin to rotate. She notes from the instruments that for the first 60 seconds the blades have a constant angular acceleration of 0.05rad/s2 . How many complete revolutions of the turbine occur during this time
Physics
2 answers:
soldier1979 [14.2K]3 years ago
5 0

Answer:

28 revolutions

Explanation:

Here we are going to use the accelerated angular motion formulas.

θ=wo*t+\frac{1}{2}*\alpha*t^2

because it starts from rest, wo=0

θ=\frac{1}{2}*(0.05rad/s^2)*(60s)^2

θ=180rad

The number of revolutions is given by:

N=\frac{180rad}{2*\pi\frac{rad}{rev}}=28.64rev

So the turbine completed 28 revolutions at that time.

emmasim [6.3K]3 years ago
4 0

Answer:

3 revolution in rad

Explanation:

angular acceleration α= rev/time

but α= 0.05rad/s

rev = α * time(in sec)

rev = 0.05 * 60

rev = 3rad/s

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