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A single degree of freedom system having mass $1$ $kg$ and stiffness $10$ $kN/m$ initially at rest is subjected to an impulse force of magnitude $5$ $kN$ for $10^{-4}$ seconds. The amplitude in $mm$ of the resulting free vibration is

  1. $0.5$
  2. $1.0$
  3. $5.0$
  4. $10.0$
in Applied Mechanics and Design 1.4k points 4 7 17
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