3 years ago

If you place a balloon in the freezer it will______

Physics

1 answer:

matrenka [14]3 years ago

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B. Deflate because volume is inversely proportional to temperature

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The parallel axis theorem relates Icm, the moment of inertia of an object about an axis passing through its center of mass, to I

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Answer:

Part a)

$I_{end} = \frac{mL^2}{3}$

Part b)

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Explanation:

As we know that by parallel axis theorem we will have

$I_p = I_{cm} + Md^2$

Part a)

here we know that for a stick the moment of inertia for an axis passing through its COM is given as

$I = \frac{mL^2}{12}$

now if we need to find the inertia from its end then we will have

$I_{end} = I_{cm} + Md^2$

$I_{end} = \frac{mL^2}{12} + m(\frac{L}{2})^2$

$I_{end} = \frac{mL^2}{3}$

Part b)

here we know that for a cube the moment of inertia for an axis passing through its COM is given as

$I = \frac{ma^2}{6}$

now if we need to find the inertia about an axis passing through its edge

$I_{edge} = I_{cm} + Md^2$

$I_{edge} = \frac{ma^2}{6} + m(\frac{a}{\sqrt2})^2$

$I_{edge} = \frac{2ma^2}{3}$

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