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If suddenly the gravitational force of attraction between earth and a satellite revolving around it becomes zero,then the satellite will: a)continue to move in its orbit with same velocity. b)move tangentially and escape away. c)become stationary in its orbit. d)move towards the earth.

Physics
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i think it will move tangentially and then escape away
why?

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Other answers:

momentum
because nothing is holding it back now.
but answer is showing is option c
uhm I would disagree with that answer.
so answer is wrong
if anyone else can prove why option C is correct, please do.
is it a geo-stationary orbit initially
what it means is it a geo-stationary orbit initially
http://en.wikipedia.org/wiki/Geostationary_orbit
in simple def.
the object orbits as the planet turns
ok
in what case option a) satisfies
object orbits becoz of gravity of earth
ok
so in what case option c satisfies
geostationary means the object orbital period is same as earth rotation
thnx.. @sara12345
in what case option c satisfies
plz tell me
i think so
i mean b is right
ok
but answer my question fast. in what case option c satisfies
it never satisfies
the answer to this question is b)move tangentially and escape away. since the velocity of the satellite is always tangent to the path for case c .. somehow the velocity of the satellite have to become zero as well as no gravity then it stops
if the object is stationary initially, it would fall on earth there and then itself
why? if gravity becomes zero at all the objects
for gravity to become 0 suddenly, it has to exist first
when gravity + stationary object are there, the object would fall
the object wouldnt fall as long as it revolves around the earth
ok you say that whaen gravity is zero it would fall on earth there and then itself
no that i didnt say, u r not listening properly
if the satellite has no speed and there is no force (like gravity) acting upon it it stands still.. so for case c to happen you need to have no gravity + zero speed
means it would fall on that object
lol i dont need her approval anyway
but she said when gravity is zero it would fall on that object
i didnt say that
i dont think she said it
i said this : when gravity + stationary object are there, the object would fall
we see the transition time, when we say the gravity is becoming 0 => gravity existed before
oh!! sry...
if gravity existed before, and therez a stationary object sitting there, it cannot sit there, it has to fall
in what case option d satisfies
a stationary object case is false
ok
in case of option d
d might happen when there is gravity but no speed for example .. then the satellite falls
oh!! k
or the speed is not high enough
so final answer would be
we said : the answer to your question is b)move tangentially and escape away.

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