A block of mass 0.1 kg is connected to an elastic spring of spring constant 640 Nm^(-1) and oscillates in a damping medium of damping constant 10^(-2) kg s^(-1).The system dissipates its energy gradually. The time taken for its mechanical energy of vibration to drop to half of its initial value, is closest to

A block of mass 0.1 kg is connected to an elastic spring of spring con

1.	A block of mass 0.1 kg is connected to an elastic spring of spring constant 640 Nm^(-1) and oscillates in a damping medium of damping constant 10^(-2) kg s^(-1).The system dissipates its energy gradually. The time taken for its mechanical energy of vibration to drop to half of its initial value, is closest to
Answer» 2s 3.5 s 7 s 5 s Answer :C