Two simple pendulums of length 1m and 1.21 m are started oscillating from some position. Find the minimum time (in second) after which they again start from same position.

Explanation

To find the minimum time after which two simple pendulums of lengths 1 m and 1.21 m will start from the same position again, we will follow these steps:

### Step 1: Calculate the Time Period of Each 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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