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Katen [24]
3 years ago
14

A model of a helicopter rotor has four blades, each of length 3.30 m from the central shaft to the blade tip. the model is rotat

ed in a wind tunnel at a rotational speed of 510 rev/min . what is the speed of the blade tip
Physics
1 answer:
ahrayia [7]3 years ago
5 0

This motion of helicopter rotor blade is an example of circular motion.

We have the angular velocity of rotor blade = 510 rev/min

                                                                         = (510*2\pi)/60

                                                                          = 53.41 rad/s

We have the linear velocity of circular motion = radius * angular velocity

So the  speed of the blade tip of helicopter = 53.41 * 3.30

                                                                         = 176.24 m/s

Speed of the blade tip of helicopter = 176.24 m/s

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What is the magnitude of the magnetic field at a point midway between them if the top one carries a current of 19.5 A and the bo
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Answer:

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Explanation:

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\large{\overrightarrow{B} = \dfrac{\mu_{0}I}{4 \pi}} \int \dfrac{\overrightarrow{dl} \times \hat{r}}{r^{2}}}

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Given \large{I_{t} = 19.5 A} and \large{I_{B} = 12.5 A}

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B_{t} = \dfrac{\mu_{0}I_{t}}{2 \pi d}

and the magnetic field (\large{B_{b}}) at 'P' due to the bottom wire

B_{b} = \dfrac{\mu_{0}I_{b}}{2 \pi d}

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\large{B_{M} = \dfrac{4 \pi \times 10^{-7}}{2 \pi d} (I_{t} - I_{b}) = \dfrac{2 \times 10^{-7}}{d} = \dfrac{41.4 \times 10 ^{-4}}{d}} T

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Answer:

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Explanation:

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Answer:

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