Grade 12thModern Physics

If earth were to shrink suddenly what would happen to the length of the day

Mohit saini

8 Years agoGrade 12th

1 Answer

Arun

8 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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If earth were to shrink suddenly what would happen to the length of the day

Mohit saini

1 Answer

Arun

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