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The weight of a body at the centre of th...

The weight of a body at the centre of the earth is

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Statement I : The weight of a body at the centre of earth is zero Statement II : The mass of a body decreases with increase in depth below the surface of earth.

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MODERN PUBLICATION-GRAVITATION-Revision Exercises (very short answer questions)
  1. Is it possible to shield a body from gravitational effects?

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  2. If a body of mass m is taken to the surface of moon, how will the iner...

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  3. The weight of a body at the centre of the earth is

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  4. What is the gravitational force between two bodies at an infinite dist...

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  5. What is the direction of force of gravity on a body?

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  6. What is the value of the acceleration due to gravity at a height equal...

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  7. If the diameter and mass of the earth becomes twice of its original va...

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  8. Where is 'g' greater, at poles or at equator ?

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  9. How the value of g changes as one moves from equator to pole?

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  10. How the value of g changes with increase in latitude of a place?

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  11. What is the unit and dimensional formula of gravitaional intensity?

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  12. What is the value of gravitational intensity at the surface of Earth a...

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  13. Define orbital speed of a satellite.

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  14. What is the direction of the orbital speed of a orbiting satellite?

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  15. What is the direction and orbital speed of a geostationary satellite?

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  16. Time period of revolution of polar satellite is around

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  17. What is the escape speed of the Sun ?

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  18. Give two examples of geostationary satellites.

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  19. Why is gravitational potential energy negative?

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  20. Keeping mass constant, if the diameter of the earth becomes twice, the...

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