Two tuning forks with natural frequencies of `340 Hz` each move relative to a stationary observer. One fork moves away form the observer, while the other moves towards him at the same speed. The observer hears beats of frequency `3 Hz`. Find the speed of the tuning fork.

Explanation

To solve the problem step by step, we can follow these instructions:

### Step 1: Understand the Problem
We have two tuning forks, both with a natural frequency of 340 Hz. One is moving towards a stationary observer, and the other is moving away from the observer. The observer hears a beat frequency of 3 Hz.

### Step 2: Define the Variables
- Let \( f = 340 \, \text{Hz} \) (natural frequency of the tuning forks)
- Let \( v \) be the speed of sound in air (approximately \( 340 \, \text{m/s} \))
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