The hollow metallic bob of a simple pendulum is filled with water. Water comes out drop by drop through a small hole at the bottom of the bob. How will the time period change?

Mar 14, 2017

$\text{ The period of simple pendulum does not change.}$

Explanation:

$\text{We can calculate the period of the simple pendulum with }$
$T = 2 \pi \sqrt{\frac{l}{g}} \text{ formula.}$

$\text{Where T period , l length of cord, g acceleration of gravity }$

$\text{As you see , Period does not depend on mass of bob.}$

$\text{Therefore, the period of simple pendulum does not change.}$

$\text{Notice: We recommend that you review the article on the link}$ $\text{discussing the variable-mass pendulum problem.}$

Https://arxiv.org/pdf/1002.3956#