Question

The center of mass of a rod of length \( l \) is at a distance ______ from one end of the rod.

• A. \( \frac{l}{4} \)
• B. \( \frac{l}{2} \)
• C. \( \frac{l}{3} \)
• D. \( l \)

Hint:

For a uniform rod, the center of mass lies at the midpoint of the rod, which is at a distance \( \frac{l}{2} \) from either end.

Answer 1

The Correct Option is B

The center of mass of a uniform rod is at the **midpoint** of the rod, which is at a distance \( \frac{l}{2} \) from either end. This is a basic property of a uniform object where its mass is evenly distributed along its length. Thus, the correct answer is: \[ \boxed{(B) \, \frac{l}{2}} \]