A test concrete block is subjected to vertical vibration and resonance occurred at a frequency of 20 cycles per second. If mass of vibration is 6 kg and mass of foundation is 244 kg, then the coefficient of elastic uniform compression of soil is given by

- 1
  
  $4 π^{2} x 10^{2} k g / m^{3}$
- 2
  
  $4 π^{2} x 10^{3} k g / m^{3}$
- 3
  
  $4 π^{2} x 10^{4} k g / m^{3}$
- 4
  
  $4 π^{2} x 10^{5} k g / m^{3}$

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