Is Mechanics applicable in Space?

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Discussion Overview

The discussion centers around the applicability of mechanics in space, particularly in relation to the absence of atmosphere and the presence of gravity. Participants explore whether Newton's laws of motion can be applied in a space environment, addressing misconceptions and clarifying the role of gravity and atmosphere in mechanics.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants assert that mechanics, defined by Newton's laws, is applicable in space regardless of the presence of atmosphere.
  • One participant argues that the absence of atmosphere does not affect the validity of Newton's laws, suggesting that mechanics operates independently of atmospheric conditions.
  • Another participant emphasizes that gravity is not absent in space, introducing the concept of "microgravity" to explain the gravitational effects that still exist but may not be locally measurable.
  • A participant humorously notes their lack of understanding of mechanics outside of a space context, indicating a personal struggle with the topic.
  • One post sarcastically implies that the laws of physics are not applicable outside of familiar terrestrial environments, highlighting a misunderstanding of the universality of physical laws.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between mechanics and the conditions in space, particularly regarding gravity and atmosphere. There is no consensus on the implications of these factors for the applicability of mechanics in space.

Contextual Notes

Some statements reflect misunderstandings about the role of gravity and atmosphere in mechanics, and there are unresolved assumptions about how these factors influence the application of physical laws in space.

Pushpam Singh
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Please explain the term "mechanics and space" and then explain if Mechanics is applicable in Space.
My friend says that since there is no atmosphere and gravitation,Mechanics cannot be applied applicable in Space.
I know that Mechanics is applicable in Space, but I couldn't make her understand it.
So, please prove it with this regard.
 
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Mechanics is basically Newton's 3 laws. Where does the atmosphere enter into any of Newton's 3 laws? If there is no place in Newton's 3 laws for the atmosphere then its presence or absence doesn't impact mechanics.
 
Pushpam Singh said:
Please explain the term "mechanics and space" and then explain if Mechanics is applicable in Space.
My friend says that since there is no atmosphere and gravitation,Mechanics cannot be applied applicable in Space.
I know that Mechanics is applicable in Space, but I couldn't make her understand it.
So, please prove it with this regard.

How do you (or your friend) think we are able to send space crafts to land or fly through other planets, or predict movements of celestial bodies? Via astrology?

Zz.
 
As already indicated, the presence of atmosphere has nothing to do with mechanics (except, of course, that atmosphere must conform to mechanics). Similarly, the presence of gravity does not have a direct connection with mechanics either, although it does determine a frame of reference which mechanics operates under (it is an existing force, which must be balanced out with other applications of force).
It should be pointed out, however, that gravity is NOT, in fact, absent in space. gravity is present throughout the universe. Scientists use the term "microgravity" to more accurately reflect the gravitational environment in space...the gravity is there, but it is not locally measurable, because you are locked into its frame of reference. In order to measure its effects, you must measure the relative motion of objects outside your immediate frame of reference (for example, the Earth does not "feel" the sun's gravity, as there is no means to locally determine its strength... however, the presence and strength CAN be measured by observing the circular path of the Earth in relation to the sun and other stars).
 
I barely know how to use mechanics if it's not in space lol.
 
Obviously, the Laws of Physics don't apply outside of the city limits.
 

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