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Variation of g (Acceleration Due to Gravity)

what is 1. th...

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what is 1. the universal law of gravitation 2.newton's universal of gravitation 3. acceleration due to gravity 4.G & g relation ship and distinction 5.mass and density of earth 6. gravitational field 7. gravitational potential energy 8. gravitational potential 9.escape velocity 10. reason of atmosphere in moon 11. reason of atmosphere in earth 12. geo-stationary satellite 13. polar satellite 14. weightlessness in satellites 15 gravation

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Q. Assertion :Orbital velocity of a satellite is greater than its escape velocity. Reason: Orbit of a satellite is within the gravitational field of earth whereas escaping is beyond the gravitational field of earth,

Q. If earth is having gravitational force,and satellites are out of earths atmosphere then why satellites are steady there?why moons gravitational force not attracting them towards it.

Q. The density of earth in terms of acceleration due to gravity (g), radius of earth (R) and universal gravitational constant (G) is:

Q. A geo-stationary satellite is orbiting around earth at height of

30, 000

km in circular orbit. The radius of the earth is taken as

6000

km. The geo-stationary satellite comes back to its position after one revolution in exactly

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hours. Let the acceleration due to gravity (g)

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and mass of satellite be

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calculate the work done in

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The mass of earth in terms of 'g' acceleration due to gravity and 'G' universal gravitational constant is:

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