When Earth revolves around the sun does its moment of inertia change with time.If yes,why. Its revolving around the same axis.
Asked by Rohan Mehra | 18th Mar, 2011, 08:38: PM
Sometimes, Earthquakes move huge masses of the solid Earth from one place to another,Redistribution of mass changes the Earth's moment of inertia. This results in changes of the Earth's rotation parameters - namely, direction of the axis and spinning rate.' The aftereffects would be like this:the product of the moment of inertia and the angular speed always stays constant. So if the momentof inertia gets a bit smaller, the rotational speed must get bigger. This in turn means that the length of the day - equal to the time for a complete rotation - gets shorter. But these effects are really quite minuscule and barely noticeable.''
Hope this helps.
Answered by | 22nd Mar, 2011, 11:43: AM
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