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anonymous

  • 4 years ago

A 200kg satellite is orbiting the Earth at an altitude of 250km. Its orbital speed is 27 800 kph. Find the centripetal acceleration of the satellite?

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  1. anonymous
    • 4 years ago
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    do you know how to do this one?

  2. anonymous
    • 4 years ago
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    well i think the radius is 27800...

  3. anonymous
    • 4 years ago
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    (200)(250)^2/27800 = 449.64ms^-2

  4. anonymous
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    does that look correct?

  5. anonymous
    • 4 years ago
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    im sorry i cant wrap my head around it.

  6. anonymous
    • 4 years ago
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    \[Fc= MV ^{2}\div R\]

  7. anonymous
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    wait wouldnt velocity be 27800?

  8. anonymous
    • 4 years ago
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    yes it is.

  9. anonymous
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    so what is my radius then?

  10. anonymous
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    thats what i was trying to figure out.

  11. anonymous
    • 4 years ago
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    V=2pi r / Time

  12. anonymous
    • 4 years ago
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    ahhh

  13. anonymous
    • 4 years ago
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    but i dont have r or t

  14. anonymous
    • 4 years ago
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    time is 1 hr

  15. anonymous
    • 4 years ago
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    because its kph?

  16. anonymous
    • 4 years ago
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    yes.

  17. anonymous
    • 4 years ago
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    hold on im getting my physics book

  18. anonymous
    • 4 years ago
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    \[V=2\pi r/t\]

  19. anonymous
    • 4 years ago
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    yes.

  20. anonymous
    • 4 years ago
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    is t= 1 ??

  21. anonymous
    • 4 years ago
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    or 60?

  22. anonymous
    • 4 years ago
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    ok a=v^2/R

  23. anonymous
    • 4 years ago
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    no that doesnt help..

  24. anonymous
    • 4 years ago
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    can you please explain :)

  25. anonymous
    • 4 years ago
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    im trying to find a way to find the radius

  26. anonymous
    • 4 years ago
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    acceleration=velocity squared/ radius

  27. anonymous
    • 4 years ago
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    so radius=velocity squared/accelertion

  28. anonymous
    • 4 years ago
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    yah but how do you get the acceleration without the radius?

  29. anonymous
    • 4 years ago
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    yea thats why i was like no that doesnt work

  30. anonymous
    • 4 years ago
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    ok now bare with me.... isnt the radius of earth given somewhere...

  31. anonymous
    • 4 years ago
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    then add 250 km

  32. anonymous
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    ????

  33. anonymous
    • 4 years ago
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    6 378.1km

  34. anonymous
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    yeaaaa

  35. anonymous
    • 4 years ago
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    there you go!!

  36. anonymous
    • 4 years ago
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    so its 6628.1km

  37. anonymous
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    v^2/r

  38. anonymous
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    27800^2km/hr / 6628.1k

  39. anonymous
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    116600.53

  40. anonymous
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    hold on sorry

  41. anonymous
    • 4 years ago
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    ((27800km/hr)^2/6 378.1km)mass

  42. anonymous
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    no you dont need mass for acceleration...

  43. anonymous
    • 4 years ago
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    i hope i was able to help you some.

  44. anonymous
    • 4 years ago
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    I have to find centripetal force now

  45. anonymous
    • 4 years ago
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    multiply by mass

  46. anonymous
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    116,600.53*200?

  47. anonymous
    • 4 years ago
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    the centripital acceleration * mass

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