A girl is sitting on a swing. Another girl sits by her side. What will be the effect on the periodic-time of the swing?

Explanation

To determine the effect on the periodic time of the swing when another girl sits beside the first girl, we can analyze the situation step by step.

### Step 1: Understand the Swing as a Pendulum
The swing can be modeled as a simple pendulum. The time period \( T \) of a simple pendulum is given by the formula:

\[ T = 2\pi \sqrt{\frac{L}{g}} \]
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