Pretty tricky...
 Fred |
 Lilly |
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How could we make the earth turn faster?
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Now something comes to my mind, have you ever seen acrobats doing a somersault in the circus?
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Yes, they cower so they turn faster. When they want to finish the somersault, they stretch out again.
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By cowering they put their mass close to the axis of rotation so they rotate faster. If they want to rotate more slowly, they displace their mass outwards.
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Let us transfer this to our earth and the melting ice.
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Yes, at first the ice is at the poles which is close to the axis of rotation, then it melts and flows away from the axis of rotation.
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How does the rotational speed of the earth around its own axis change?“