mayankdevnani
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.
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mayankdevnani
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@amistre64 @igbasallote @UnkleRhaukus @hartnn @Zarkon @.Sam. @bahrom7893 @cwrw238
bahrom7893
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i think it will move tangentially and then escape away
mayankdevnani
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why?
UnkleRhaukus
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momentum
bahrom7893
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because nothing is holding it back now.
mayankdevnani
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but answer is showing is option c
bahrom7893
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uhm I would disagree with that answer.
mayankdevnani
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so answer is wrong
bahrom7893
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if anyone else can prove why option C is correct, please do.
UnkleRhaukus
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is it a geo-stationary orbit initially
mayankdevnani
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what it means is it a geo-stationary orbit initially
mayankdevnani
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in simple def.
UnkleRhaukus
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the object orbits as the planet turns
mayankdevnani
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ok
mayankdevnani
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in what case option a) satisfies
sara12345
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object orbits becoz of gravity of earth
mayankdevnani
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ok
mayankdevnani
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so in what case option c satisfies
sara12345
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geostationary means the object orbital period is same as earth rotation
mayankdevnani
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thnx.. @sara12345
mayankdevnani
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in what case option c satisfies
mayankdevnani
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plz tell me
sara12345
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i think so
mayankdevnani
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@sauravshakya
sara12345
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i mean b is right
mayankdevnani
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ok
mayankdevnani
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but answer my question fast.
in what case option c satisfies
sara12345
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it never satisfies
Coolsector
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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
sara12345
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if the object is stationary initially, it would fall on earth there and then itself
mayankdevnani
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why? if gravity becomes zero at all the objects
sara12345
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for gravity to become 0 suddenly, it has to exist first
sara12345
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when gravity + stationary object are there, the object would fall
sara12345
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the object wouldnt fall as long as it revolves around the earth
mayankdevnani
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ok you say that whaen gravity is zero it would fall on earth there and then itself
sara12345
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no that i didnt say, u r not listening properly
Coolsector
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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
mayankdevnani
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means it would fall on that object
mayankdevnani
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@sara12345 @Coolsector is right?
Coolsector
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lol i dont need her approval anyway
mayankdevnani
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but she said when gravity is zero it would fall on that object
sara12345
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i didnt say that
Coolsector
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i dont think she said it
sara12345
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i said this :
when gravity + stationary object are there, the object would fall
sara12345
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we see the transition time, when we say the gravity is becoming 0 => gravity existed before
mayankdevnani
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oh!! sry...
sara12345
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if gravity existed before, and therez a stationary object sitting there, it cannot sit there, it has to fall
mayankdevnani
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in what case option d satisfies
sara12345
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a stationary object case is false
mayankdevnani
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ok
mayankdevnani
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in case of option d
Coolsector
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d might happen when there is gravity but no speed for example .. then the satellite falls
mayankdevnani
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oh!! k
Coolsector
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or the speed is not high enough
mayankdevnani
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so final answer would be
Coolsector
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we said : the answer to your question is b)move tangentially and escape away.
mayankdevnani
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thnx... @UnkleRhaukus @sara12345 @Coolsector @bahrom7893