A rod with rectangular cross section oscillates about a horizontal axis passing through one of its ends and it behaves like a seconds pendulum, its length will be
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To find the length of a rod with a rectangular cross-section that behaves like a seconds pendulum when oscillating about a horizontal axis passing through one of its ends, we can follow these steps:
### Step 1: Understand the Time Period Formula
The time period \( T \) for a rigid body oscillating about a pivot is given by the formula:
\[
T = 2\pi \sqrt{\frac{I}{mgd}}
\]
where:
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