The oscillatory motion is simple harmonic motion since

Explanation

To answer the question "The oscillatory motion is simple harmonic motion since...", we need to understand the characteristics of simple harmonic motion (SHM) and how it relates to oscillatory motion.

### Step-by-Step Solution:

1. **Understanding Oscillatory Motion**:
- Oscillatory motion refers to any motion that repeats itself in a regular cycle. Examples include the swinging of a pendulum or the vibration of a spring.

2. **Defining Simple Harmonic Motion**:
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