sir previously also i've requested the solution for this. please understand me i want to learn. help me out

please find the attachment

how to calculate natural frequency in this cct

 

sir previously also i've requested the solution for this. please understand me i want to learn. help me out

please find the attachment

how to calculate natural frequency in this cct

Determine the time constant of the natural response of the RC circuit by means of using thevenin's principal. Evaluate the resistance seen at the terminals of the given capacitor. A simple procedure for finding the time constant of the RC circuit you posted ( fed by a constant source) is:
1. short the power source to ground.
2. open the current source
Therefore, you have a thevenin's equivalent resistance equal to 1. By doing the math, RC equals 1. Remember a one time constant......