If earth were to shrink suddenly what would happen to the length of the day
Mohit saini , 7 Years ago
Grade 12th
Modern Physics> If earth were to shrink suddenly what wou...
1 Answers
Arun
Last Activity: 7 Years ago
Dear Mohit
FROM CONSERVATION OF ANGULAR MOMENTUM
AS NO EXTERNAL TORQUE IS ACTING
I W=CONSTANT WHERE W=ANGULAR VELOCITY
AS EARTH SHRINKS ITS MOMENT OF INNERTIA ABOUT ITS AXIS DECREASES THUS ITS ANGULAR VELOCITY INCRESES AND TIME PERIOD OF ROTATION ABOUT ITS OWN AXIS DECREASE
THEREFOR LENGTH DAYS BECOME SHORTER
Regards
Arun (askIITians forum expert)
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