Suppose partial melting of the polar ice caps increases the moment of inertia of the Earth from 0.331MR^2 to 0.332MR^2. What is the change in length of day in seconds?

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  1. momentum is conserved



    but angular velocity=2PI/period


    period new= periodold*(..331/.332)

    change in period
    period new-period old
    change in period=24*3600(.332-.331)/.331

    I get about 260 seconds. check all that.

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