Step-by-step explanation:
We have,
Spring constant of the spring, k = 165 N/m
Mass, m = 2 kg
It is required to find the period of the mass-spring system. For the spring mass system, the period is given by :
![T=2\pi \sqrt{(m)/(k) }\\\\T=2\pi \sqrt{(2)/(165) }\\\\T=0.69\ s](https://img.qammunity.org/2021/formulas/physics/high-school/30nt9pze24pg0t2qkfko2lcacc26mx7s4d.png)
The frequency of vibration is reciprocal of its time period. So,
![f=(1)/(T)\\\\f=(1)/(0.69)\\\\f=1.44\ Hz](https://img.qammunity.org/2021/formulas/physics/high-school/x2ibgkibkyl2srh9dx3y2ooc3m5rs4db6f.png)
So, the period of the mass-spring system is 0.69 s and frequency is 1.44 Hz.