The new frequency is 0.707 times the original frequency.
Let's denote the original mass as 'm' and the added mass as 'Δm'. The initial frequency is given by:
f0 = 1/(2π) * √(k/m)
where 'k' is the spring constant. When a mass of Δm is added, the new frequency becomes:
f' = 1/(2π) * √(k/(m + Δm))
Since we are asked to solve the problem without finding the force constant of the spring, we can divide both equations by each other to eliminate 'k':
f'/f0 = √(m/(m + Δm))
Plugging in the values of m = 0.220 kg and Δm = 0.220 kg, we get:
f'/f0 = √(0.220/(0.220 + 0.220)) = 0.707 Hz
Therefore, the new frequency is 0.707 Hz times the original frequency.