A $100 \,g$ mass stretches a particular spring by $9.8 \,cm$, when suspended vertically from it. ....... $g$ large a mass must be attached to the spring if the period of vibration is to be $6.28 \,s$.
  • A$1000$
  • B$10^5$
  • C$10^7$
  • D$10^4$
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