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The time period of a bob completely filled with mercury is T What will be the time period if the half of the mercury is removed from the bob?
Wiki User
∙ 14y ago
We don't know anything about what the bob is hung with. Is it a bamboo pole ? A steel rod ?
A chain or 1/4" aluminum cable ? Is it a thin massless thread ?
It makes a difference, because the arc-period of the whole assembly depends on the length
between its center of mass and the pivot.
Since we don't know anything about the support, we'll assume it to be massless.
Also, since we don't know anything about the bob itself, we'll assume it to be a point, with no
dimensions, hanging on the end of a massless string.
Now the period depends only on the length of the string, and is the same regardless of the
mass or weight of the bob. So, removing half of the Mercury from the bob has no effect on the period.
Wiki User
∙ 14y ago
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