An electron in a research apparatus follows a circle path. On the electron’s first circuit of the apparatus, its speed is v0 and the radius of its circular path is R. Each time it makes on circuit, it passes a short region where it receives a “kick” and gains an additional speed of v 0 1 0 0 .  The electron follows a circular path such that the magnitude of its acceleration is always the same. What is the radius of the circular path after the electron has received 10 kicks?

Option 1 -

R 1 . 1

Option 2 -

1.1

Option 3 -

1.21

Option 4 -

R 1 . 2 1

0 2 Views | Posted 2 weeks ago
Asked by Shiksha User

  • 1 Answer

  • V

    Answered by

    Vishal Baghel | Contributor-Level 10

    2 weeks ago
    Correct Option - 3


    Detailed Solution:

      a = v 0 2 R

    after 10 kicks, v = v 0 + 1 0 v 0 1 0 0 = 1 . 1 v 0

    R 1 = 1 . 2 1 R

     

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A
alok kumar singh

Please find the solution below:

 

 

 

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Vishal Baghel

v? = 3tî v? = 24cos 60°î + 24sin 60°? = 12î + 12√3?
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V
Vishal Baghel

ω = θ² + 2θ
α = (ωdω)/dθ = (θ² + 2θ) (2θ + 2)
At θ = 1rad.
ω = 3rad/s and α = 12rad/s²
a? = αR = 12 m/s² a? = ω²R = 9 m/s² A? = √ (a? ² + a? ²) = 15 m/s²

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Vishal Baghel

a? = v? ²/4r
a_A? = (v? ²/r²) × r = v? ²/r
a_A = 3v? ²/4r

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a = ω²l = (2π/T)²l = (2π/60)²×0.1 = 1.1×10? ³ m/s²

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