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AlekseyPX
2 years ago
7

The world’s largest wind turbine has blades that are 80 m long and makes 1 revolution every 5.7 seconds. What is the velocity fo

r one of the blades? (THIS IS physics, CIRCULAR MOTION)?
Physics
1 answer:
klemol [59]2 years ago
3 0

Answer:

The free end of the blade has a tangential velocity of about 88.19 m/s

Explanation:

The angular velocity of the blades is  2 \pi /5.7\,\,rad/sec

since the blades are 80 m long, then the tangential velocity of the free end of the blade is:

v_{tan} \approx 88.19\,\,m/s

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A spring gun is made by compressing a spring in a tube and then latching the spring at
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Answer:

a)v=13.2171\,m.s^{-1}

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Explanation:

Given:

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We know

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a\approx 1835\,m.s^{-2}\\

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v^2=u^2+2a.\Delta x

where:

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v^2= 0^2+2\times 1835\times 0.0476

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(b)

Now, in vertical direction we take the above velocity as the initial velocity "u"

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u=13.2171\,m.s^{-1}

∵At maximum height the final velocity will be zero

v=0\,m.s^{-1}

Using the equation of motion:

v^2=u^2-2g.h

where:

h= height

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0^2=13.2171^2-2\times 9.8\times h

h=8.9129\,m

is the height from the release position of the spring.

So, the height from the latched position be:

H=h+\Delta x

H=8.9129+0.0476

H=8.9605\,m

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