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(a) What holds the atmosphere around ear...

(a) What holds the atmosphere around earth? (b) How do you account for flow of water in rivers?

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(a) Gravitational pull of earth on the atmosphere. (b) flow of water in rivers is also due to gravitational force of earth on water.
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PRADEEP-GRAVITATION-Paper-pen test
  1. Gravitational force acts on all objects in properties to their masses....

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  2. Calculate the gravitational force on a body of mass 1 kg lying on the ...

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  3. (a) What holds the atmosphere around earth? (b) How do you account for...

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  4. Does newton's third law apply to force of gravitation ? Give one examp...

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  5. The speed of planet is greater when it is closer to the sun than when ...

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  6. Two bodies A and B having masses 20kg and 40kg are separated by 10 m. ...

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  7. Define universal gravitational constant. Given its value with SI units...

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  8. The earth attracts a body of mass 2 kg on its surface with a force of

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  9. A stone dropped from a building takes 4 s to reach the ground. The hei...

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  10. In the above quation, velocity with which the sone hits the ground is

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  11. If g(e) is acceleration due to gravity on earth and g(m) is accelerati...

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  12. Given, acceleration due to gravity on surface of earth is g. if g' is ...

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  13. The mass of a body on the surface of earth is 12kg. if acceleration du...

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  14. When a stone is thrown up, it reaches a certain height and then stars ...

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  15. A body weighs 10 kg on earth, where g=9.8m//s^(2). What would be its...

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  16. A stone is released from the top of a tower of height 1960 m. calculat...

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  17. The value of 'g' does not depend upon mass of the body, but gravitatio...

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  18. The value of acceleration due to gravity is maximum at poles and minim...

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  19. (i) mass of a body is always constant. Why ? (ii) mass of a body can...

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  20. A ball thrown up vertically returns to the thrower after 8 second. Cal...

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