A mass of 2 kg is put on a flat pan attached to a vertical spring fixed on the ground as shown in Fig. The mass of the spring and the pan is negligible. When pressed slightly and released the mass executes a simple harmonic motion. The spring constant is 200 N/m. What should be the minimum amplitude of the motion so that the mass gets detached from the pan ? (Take g = 10 m/s²)
 

• A

  4.0 cm

• B

  8.0 cm

• C

  10.0 cm

• D

  Any value less than 12.0 cm