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Sidana [21]
2 years ago
14

An aircraft increases its speed by 2% in straight and level flight. If the total lift remains constant determine the revised CL

as a percentage of its original value to three significant figure
Engineering
1 answer:
damaskus [11]2 years ago
7 0

Answer:

96.1%

Explanation:

We know that lift force

F_L=\dfrac{1}{2}C_L\rho AV^2

                                                                    ------------(1)

Where C_L is the lift force coefficient .

          ρ is the density of fluid.

         A is the area.

        V is the velocity.

Now when speed is increased by 2 % and all other parameter remains constant except C_L .

Let;s take new value of lift force coefficient is C_L' .

F_L=\dfrac{1}{2}C_L'\rho A(1.02V)^2

                                                                         -----------(2)

Now from equation 1 and 2

C_L\times V^2=C_L'\times1.0404 V^2

⇒C_L'=0.961C_L

So we can say that revised value of  lift force coefficient is 96.1% of original value.

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Explanation:

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A 1 turn coil carries has a radius of 9.8 cm and a magnetic moment of 6.2 X 10 -2 Am 2. What is the current through the coil?
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