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19 August, 17:18

Based on the law of conservation of angular momentum, what would happen to a collapsing cloud of gas and dust--isolated in space with no external forces--as its size decreases?

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  1. 19 August, 20:48
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    The cloud will spin faster.

    Explanation:

    According to law of conservation of angular momentum, when the mass size is same, if the size of the collapsing cloud decrease, its it angular velocity should increase.

    Angular momentum L = mrω^2

    Since L and m is constant, to keep L same. when r is decreased ω must increase. Therefore, the cloud will spin faster.
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