| Topic: |
Science > Physics |
| User: |
"" |
| Date: |
02 Oct 2005 06:01:48 PM |
| Object: |
help me plz |
i have been trying to answer this question on my own for a while now
but i
can't seem a get an appropriate answer.
question: suppose you observe an object from a reference frame and find
that
it has an acceleration, vector a, when there are no forces acting on
it. how
can you use this info to find an inertial frame?
I thought that, by logic, the force causing the frame of reference
itself to
move must be accelerating with the same magnitude ,a, but in the
opposite
direction. however, how do i find the actual inertial frame? and does
logic/intuition counts as a reasoning?
I'd really appreciate a proper answer to this question. I hope you guys
help. Thank you in advance.
.
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| User: "Sam Wormley" |
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| Title: Re: help me plz |
02 Oct 2005 06:11:40 PM |
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wrote:
question: suppose you observe an object from a reference frame and find
that it has an acceleration, vector a, when there are no forces acting on
it.
Newton's second law -- if there is an acceleration of the mass, there
is a force.
http://scienceworld.wolfram.com/physics/NewtonsSecondLaw.html
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| User: "" |
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| Title: Re: help me plz |
02 Oct 2005 06:30:33 PM |
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I understand this but how do you reply the question. thx btw.
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| User: "Sam Wormley" |
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| Title: Re: help me plz |
02 Oct 2005 06:47:22 PM |
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wrote:
I understand this but how do you reply the question. thx btw.
You'll have to state a question without the contradiction in
it. Do all objects in the frame of reference (box, room, etc.)
experience the same acceleration?
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| User: "" |
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| Title: Re: help me plz |
03 Oct 2005 02:46:52 AM |
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I have to say 'yes'. The frame or reference itself must be
accelerating. I hope it helps.
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| User: "Sam Wormley" |
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| Title: Re: help me plz |
03 Oct 2005 09:18:36 AM |
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wrote:
I have to say 'yes'. The frame or reference itself must be
accelerating. I hope it helps.
Well the frame of reference could itself be accelerating.... or
in could be sitting on the ground of a planet like the Earth
with its contents experiencing gravitation.
How could you tell the difference?
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| User: "radio" |
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| Title: Re: help me plz |
03 Oct 2005 01:03:05 PM |
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my question needn't know where the frame of reference is but do tell me
how you'd tell the difference if it's possible. thx
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| User: "Sam Wormley" |
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| Title: Re: help me plz |
03 Oct 2005 01:59:16 PM |
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radio wrote:
my question needn't know where the frame of reference is but do tell me
how you'd tell the difference if it's possible. thx
It would be REALLY hard to tell the difference. Only if you could
measure a variation in the strength of a gravitational field within
the "box" could you tell the difference.
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