A particle starts oscillating from half the amplitude position. What is its initial phase?

Explanation

To find the initial phase of a particle starting oscillation from half the amplitude position, we can follow these steps:

### Step 1: Understand the equation of Simple Harmonic Motion (SHM)
The general equation for SHM can be expressed as:
\[ y(t) = A \sin(\omega t + \phi) \]
where:
- \( y(t) \) is the displacement at time \( t \),
- \( A \) is the amplitude,
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