Is There a Difference Between Push and Pull in a Spinning Space Station?

In summary: Since "angular momentum" in this context doesn't make much sense, try to elaborate on what you meant.Since "angular momentum" in this context doesn't make much sense, try to elaborate on what you meant.I have been told emphatically that there is no such force as centrifugal force and to use the phrase angular momentum when referring to what it referrs. Centifugal force then. Centrifugal force seems like a pushing force and gravity seems like a pulling force. Would there be any subtle differences on physiology in a spinning space station if one is being "pushed" rather than pulled. like the space station in 2001.There wouldn't be any real physiological differences, though the environment in
  • #1
mee
213
1
Is angular momentum a push and gravity a pull? I just thought there might be unforseen differences in human reaction on a spinning space station.
 
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  • #2
On a spinning space station far away from hugely massive celestial bodies, gravity can be neglected as a force.
You will be pushed outwards towards the outer shell of the station by the centrifugal force (a pseudo-force); the normal force from the shell will keep you in place.
In effect therefore, it is the centrifugal force which will play the role of gravity.

The most apparent discrepancy between life-on-earth and life-on-space-station will probably be effects from the Coriolis force (another pseudo-force)
 
  • #3
arildno said:
On a spinning space station far away from hugely massive celestial bodies, gravity can be neglected as a force.
You will be pushed outwards towards the outer shell of the station by the centrifugal force (a pseudo-force); the normal force from the shell will keep you in place.
In effect therefore, it is the centrifugal force which will play the role of gravity.

The most apparent discrepancy between life-on-earth and life-on-space-station will probably be effects from the Coriolis force (another pseudo-force)


Thanks but this doesn't answer my question.
 
  • #4
Since "angular momentum" in this context doesn't make much sense, try to elaborate on what you meant.
 
  • #5
arildno said:
Since "angular momentum" in this context doesn't make much sense, try to elaborate on what you meant.

I have been told emphatically that there is no such force as centrifugal force and to use the phrase angular momentum when referring to what it referrs. Centifugal force then. Centrifugal force seems like a pushing force and gravity seems like a pulling force. Would there be any subtle differences on physiology in a spinning space station if one is being "pushed" rather than pulled. like the space station in 2001.
 
  • #6
You are right, centrifugal force doesn't actually exist, its only an effect that gives a force outward. Since all objects in motion want to stay in motion in a straight line...the constant spinning and changing in direction causes an outward "force". Angular momentum is what is actually present, the system of the planets orbiting around the sun is a balance between gravity and angular momentum. As for the space station...using artificial gravity in space stations solves the problem of decaying muscles, but would not help in the case of decreasing calcium in the bones. In other words, its not as good of an environment as gravity on earth.
 
  • #7
mee said:
I have been told emphatically that there is no such force as centrifugal force and to use the phrase angular momentum when referring to what it referrs. Centifugal force then. Centrifugal force seems like a pushing force and gravity seems like a pulling force. Would there be any subtle differences on physiology in a spinning space station if one is being "pushed" rather than pulled. like the space station in 2001.

I gather that the coriolis force is a problem if the space station is too small. There's no difference between gravitational acceleration and inertial forces per se, the difference is that in the space station you have the coriolis force as well as the centrifugal force.
 

1. What is gravity?

Gravity is a force that exists between any two objects with mass. It is responsible for keeping objects in orbit around larger bodies, such as planets around a star, and for the falling of objects towards the ground.

2. How does gravity affect the motion of objects?

Gravity causes objects to accelerate towards each other. The amount of acceleration is dependent on the mass and distance between the objects. The larger the mass of an object, the stronger its gravitational pull will be.

3. What is angular momentum?

Angular momentum is a measure of an object's rotational motion. It is calculated by multiplying an object's moment of inertia (a measure of its resistance to rotation) by its angular velocity (the rate at which it is rotating).

4. How is angular momentum related to gravity?

Angular momentum is related to gravity in the sense that the gravitational force between two objects can cause them to rotate around each other. This rotation creates angular momentum, which is conserved as long as there is no external torque acting on the system.

5. Why is angular momentum important in space exploration?

Angular momentum is important in space exploration because it allows spacecraft to change their orbits and travel to different destinations in the solar system. By manipulating their angular momentum, spacecraft can use the gravitational forces of planets and other objects to propel themselves to their desired locations.

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