Sometimes when a vehicle is driven at a particular speed, a rattling sound is heard. Explain briefly, why this happens and give the name of the phenomenon taking place?

Explanation

### Step-by-Step Solution:

1. **Understanding the Situation**: When a vehicle is driven at a specific speed, a rattling sound is sometimes heard. This indicates that something is happening with the vehicle's components.

2. **Identifying the Cause**: The rattling sound is primarily due to the vibrations of certain parts of the vehicle. These vibrations can be linked to the engine's operation.

3. **Natural Frequency**: Every object has a natural frequency at which it tends to vibrate. This is determined by the physical properties of the object, such as its shape, size, and material.

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