Orbital Velocity (1 Viewer)

[Mathsisfun15]

So I was talking to my friend and he asked me what is orbital velocity of a geostationary satellite relative to.
I said the axis of the earth which is considering stationary but he's not satisfied.
I thought that a particle undergoing centripetal motion is relative to the centre of the centripetal motion which is considered stationary
Am I right?

 

[Drsoccerball]

So I was talking to my friend and he asked me what is orbital velocity of a geostationary satellite relative to.
I said the axis of the earth which is considering stationary but he's not satisfied.
I thought that a particle undergoing centripetal motion is relative to the centre of the centripetal motion which is considered stationary
Am I right?

But the thing is when you find orbital velocity you're not finding acceleration or Force... But still if you use the classical :





It is 100% from the centre of gravity.

 

[braintic]

Question: How many times does the earth rotate 360 degrees on its own axis in one year?

(It is NOT 365 or 365.25 or any more precise value for that number)

 

[Drsoccerball]

Question: How many times does the earth rotate 360 degrees on its own axis in one year?

(It is NOT 365 or 365.25 or any more precise value for that number)

Is this an actual calculation question or just a known fact ?

 

[braintic]

You can treat it as either. It is a simple calculation.

A clue: One earth day is 24 hours, but that is NOT the time taken for the earth to complete a 360 degree revolution (despite the fact that this is what practically all textbooks claim).

Once you figure out why not, you should be able to get the answer.

 

[Drsoccerball]

You can treat it as either. It is a simple calculation.

A clue: One earth day is 24 hours, but that is NOT the time taken for the earth to complete a 360 degree revolution (despite the fact that this is what practically all textbooks claim).

Once you figure out why not, you should be able to get the answer.

Is it the fact that the earth is tilted or nah ?

 

[Mr_Kap]

You can treat it as either. It is a simple calculation.

A clue: One earth day is 24 hours, but that is NOT the time taken for the earth to complete a 360 degree revolution (despite the fact that this is what practically all textbooks claim).

Once you figure out why not, you should be able to get the answer.

isnt 24 hours the time taken to complete a 360 degree revolution relative to the sun? i thought it was.

I've been lied to my whole life/

 

[Drsoccerball]

You can treat it as either. It is a simple calculation.

A clue: One earth day is 24 hours, but that is NOT the time taken for the earth to complete a 360 degree revolution (despite the fact that this is what practically all textbooks claim).

Once you figure out why not, you should be able to get the answer.

It takes the Earth one whole year to do a full 360 because of the Earth's tilt.

 

[braintic]

isnt 24 hours the time taken to complete a 360 degree revolution relative to the sun? i thought it was.

I've been lied to my whole life/

It takes 24 hours to rotate so that the sun is in the same position, yes. But that is not a 360 degree rotation.

 

[braintic]

To answer the question, the earth rotates 366.25 times in the course of a year.