clever angel
Member
hi ppl
can someone explain me q 19 part a how to draw the diagram
can someone explain me q 19 part a how to draw the diagram
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question 19 (1 Viewer)
- Thread starter clever angel
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DigitalFortress
Member
the answer is 4...
just 4.
just 4.
DigitalFortress
Member
now you know better 
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haha clever angel truly is clever!
Captain Gh3y
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clever angel
Member
its the question about the effect of the earths rotational motion 2004 hsc
and we have to draw the positions of the three plantes mars, earth and dat's wat i don;t get
the answer is available in the 2004 success guide but i don;t undertstand it
and we have to draw the positions of the three plantes mars, earth and dat's wat i don;t get
the answer is available in the 2004 success guide but i don;t undertstand it
I know the question but havent seen the answer, my guess is make sure the planets are orbiting counter-clockwise and launched from the earth vertically then tilted toward the east. When drawing its trajectory ensure it doesnt go straight to mars in a straight line, ensure it follows an orbitalmotion around the sun and therefore, has a curve to it
Yeh, its the one i guessed it was earlier
http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2004exams/pdf_doc/physics_04.pdf
basically, you answer part A by thinking where will earth by in practically
7 months, ( a lil over half another orbit) but since Mars has a larger radius from the sun it will be behind the earth at that time
for the satellite having it spiralling out from earth and spiralling into Mars
i think that makes it more accurate
http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2004exams/pdf_doc/physics_04.pdf
basically, you answer part A by thinking where will earth by in practically
7 months, ( a lil over half another orbit) but since Mars has a larger radius from the sun it will be behind the earth at that time
for the satellite having it spiralling out from earth and spiralling into Mars
i think that makes it more accurate
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How it was marked:
The time was approximately six months later, so a template was used that centred on the correct position opposite Earth, and gave about a cm leeway.
As the North pole is shown, you were required to have the planets orbiting anti-clockwise.
Based on the knowledge, that Mars has a larger orbit than Earth, then the Period had to be greater than Earth, So angular wise, it must travel less than Earth. A range of about 2 cm was allowed for the position of Mars from just above the 3 o'clock position of the diagram. OR if you use Kepler's third law based on the measured radiuses and calculated the period, then the position, then it was accepeted.
The trajectory, had to start from the original position of the Earth, that is already drawn, and finish at the position where Mars was drawn by you. It has to take the shortest route, to allow for use to use gravity, so it went anti-clockwise. The shape of the trajectory has to be an ellipse, as has no power, so the acceleration is based on gravity. This means the orbit cannot go closer to the sun than Earth's orbit or further out than MAr's orbit.
The time was approximately six months later, so a template was used that centred on the correct position opposite Earth, and gave about a cm leeway.
As the North pole is shown, you were required to have the planets orbiting anti-clockwise.
Based on the knowledge, that Mars has a larger orbit than Earth, then the Period had to be greater than Earth, So angular wise, it must travel less than Earth. A range of about 2 cm was allowed for the position of Mars from just above the 3 o'clock position of the diagram. OR if you use Kepler's third law based on the measured radiuses and calculated the period, then the position, then it was accepeted.
The trajectory, had to start from the original position of the Earth, that is already drawn, and finish at the position where Mars was drawn by you. It has to take the shortest route, to allow for use to use gravity, so it went anti-clockwise. The shape of the trajectory has to be an ellipse, as has no power, so the acceleration is based on gravity. This means the orbit cannot go closer to the sun than Earth's orbit or further out than MAr's orbit.
do you think a spiral at the end (around mars once) would matter?helper said:
since for me that shows when the satellite becomes attracted more
to mars then the earth /sun..
i guess there were only a few marks for that question so it wouldnt matter
anyway
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spank_meh
add me on MSN NOW!!!!
well the whole question is worth 6 marks :I ...
buhbye
lol i have the 2004 one
buhbye
rama_v
Active Member
The markers guide says the path of the satallite must be elliptical with teh sun as one focus of the ellipse