The phase difference between two particies executing shm is `pi//2`. What does it mean?

Explanation

To understand the meaning of a phase difference of \(\frac{\pi}{2}\) (or 90 degrees) between two particles executing simple harmonic motion (SHM), we can break it down step by step.

### Step-by-Step Solution:

1. **Understanding Simple Harmonic Motion (SHM)**:
- SHM is a type of periodic motion where the restoring force is directly proportional to the displacement from the equilibrium position and acts in the opposite direction.
- The general equation for the displacement \(y\) of a particle in SHM can be expressed as:
\[
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