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July 9th, 2019, 07:15 AM   #1
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How Earth maintain its same angular momentum even after sun disappears?

How Earth maintain its same angular momentum even after sun disappears ?
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July 9th, 2019, 07:30 AM   #2
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The sun is still there, you just can't always see it from where you are.
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July 9th, 2019, 08:08 AM   #3
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July 9th, 2019, 08:10 AM   #4
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Quote:
Originally Posted by Ganesh Ujwal View Post
How Earth maintain its same angular momentum even after sun disappears ?
You... actually think the sun disappears at night?
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July 9th, 2019, 08:23 AM   #5
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Some context is definitely needed. Are we talking about the sun being magically compressed into a black hole? The sun magically disappearing? The angular momentum of the Earth revolving around the sun, or spinning about its own axis?
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July 9th, 2019, 10:05 PM   #6
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@2:28 He explains Earth maintain its same angular momentum even after sun disappears.

I didn't get it.
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July 9th, 2019, 10:44 PM   #7
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Originally Posted by Ganesh Ujwal View Post


@2:28 He explains Earth maintain its same angular momentum even after sun disappears.

I didn't get it.
A force that goes radially inwards (like gravity) produces no torque. So whether the force is there or not, the torque is 0.
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July 10th, 2019, 07:08 AM   #8
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Quote:
Originally Posted by Micrm@ss View Post
A force that goes radially inwards (like gravity) produces no torque. So whether the force is there or not, the torque is 0.
I am asking about How Earth maintain its same angular momentum even after sun disappears?
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July 10th, 2019, 12:16 PM   #9
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Quote:
Originally Posted by Ganesh Ujwal View Post
I am asking about How Earth maintain its same angular momentum even after sun disappears?
What Micrm@ss is saying is that the Sun produces no torque on the Earth, so if the Sun is suddenly not there angular momentum is conserved and the angular momentum of the Earth will not change.

-Dan
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July 10th, 2019, 12:39 PM   #10
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Quote:
Originally Posted by Ganesh Ujwal View Post
I am asking about How Earth maintain its same angular momentum even after sun disappears?
And that is what I'm answering.

What is the relation between torque and angular momentum?
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