AMU Medical AMU Solved Paper-1999

  • question_answer
    A\[1.00\times {{10}^{-20}}kg\]particle is vibrating with simple harmonic motion with a period of\[1.00\times {{10}^{-5}}\]s and a maximum speed of\[1.00\times {{10}^{3}}m/s\]. The maximum displacement of the particle is

    A)  1.59mm         

    B)  1.00m

    C)  10 m            

    D)  none of the above

    Correct Answer: A

    Solution :

    : \[T=1.00\times {{10}^{-5}}\sec \] \[{{v}_{m}}=1.00\times {{10}^{3}}m/s\] In S.H.M, maximum speed \[({{v}_{m}})=a\omega =\frac{a\times 2\pi }{T}\] \[\therefore \] \[T={{v}_{m}}=a\times 2\pi \] Or \[a=\frac{T{{v}_{m}}}{2\pi }=\frac{({{10}^{-5}})({{10}^{3}})}{2\times 3.14}=\frac{{{10}^{-2}}}{6.28}m\] Or \[a=\frac{10}{6.28}mm\] Or \[a=1.59\,mm\] Maximum displacement \[(a)=1.59\text{ }mm\]


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