A mass M is attached to a spring oscillates with a period of 2 sec. If the mass is increased by 2 kg, the period increases by 1 sec. Assuming Hooker's law is obeyed the value of intital mass M is

Options

A. `1.6 kg`
B. `1.8 kg`
C. `2.1 kg`
D. `2 kg`

Answer

A