How Does the Position of G Change in Different Types of Pendulum Bobs?

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The discussion focuses on how the position of the center of mass (CM) affects the acceleration due to gravity (g) in different types of pendulum bobs: a solid sphere, a hollow sphere, and a sphere half-filled with liquid. Participants explore how the distribution of mass in these bobs influences their CM, which in turn affects the pendulum's behavior. The question emphasizes the need to understand the relationship between mass distribution and gravitational acceleration. The inquiry suggests that while g is constant, the effective position of g may vary based on the pendulum's design. Understanding these dynamics is crucial for analyzing pendulum motion in physics.
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Homework Statement



how will the position of g incase of a simple pendulum change in the following 3 cases
1.the bob being a hollow sphere
2.half filled with liquid
3. normal sphere.

Homework Equations





The Attempt at a Solution

 
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What is g? Typically it is acceleration due to gravity, but that doesn't seem to suit this question..
 
in the 3 cases i.e.
1.solid sphere
2.hollow sphere
3.a sphere half filled with some liquid
where will the center of mass be situated and the spheres are assumed to be made of same material
 

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