A statellite M = 1000kg has circular orbit and its initial speed is 5000m/s.
Pressurized hydrogen gas escapes from the tank through the crack directly bacwards with the speed 1000m/s at a rate 10mg/s.
What is the new speed of the satellite after 5kg of gas has escaped?
2007-02-20 04:31:54 · 1 answers · asked by Alexander 6 in Science & Mathematics ➔ Physics
'Can you elucidate further on the term 'directly backwards':
2) The jet is always tangential to the elliptical orbit that the satellite will be forced into.
3) The jet is always at right angles to the radial vector from the earth'
Assume that orientation system of the satellite maintains either condition 2) or 3), whichever
you find more convenient (due to negligibly small eccentricity throughot the process it makes little differnece). Case 3) is actually quite common.
2007-02-20 09:27:24 · update #1
kaksi_guy:
u*(dm/dt) = m*(dv/dt)
Where did your gravity force dissapear?
2007-02-21 03:24:47 · update #2
♠ Mr. Rufus is 100% right and is an expert, as well as yourself for sure. Yet an experienced student would be better here;
♣ u*(dm/dt) = m*(dv/dt); const u=1000m/s; then
Δv=u*ln(M/m) = 1000*ln(1000/(1000 -5)) = 5 m/s;
♥ if you find me wrong then I’m an ‘expert’ too (lol);
where is Rufus btw ?
2007-02-20 21:33:53 · answer #1 · answered by Anonymous · 0⤊ 3⤋