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A star 2.5 times the mass of the sun and...

A star 2.5 times the mass of the sun and collapsed to a size of 12 km rotates with a speed of 1.2 rev. per second. (Extremely compact stars of this kind are known as neutron stars. Certain stellar objects called pulsars belong to this category). Will an object placed on its equator remain stuck to its surface due to gravity ? (mass of the sun `= 2xx10^30 kg`).

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MODERN PUBLICATION-Unit Test - Gravitation-Example
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  2. As you have learnt in the text, a geostationary satellite orbits the e...

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  3. A star 2.5 times the mass of the sun and collapsed to a size of 12 km ...

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  6. Derive Newton's law of gravitation from Kepler's law.

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  7. Imagine a planetary system in which the gravitational force varied as ...

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  8. In an imaginary planetary systems the central star has a mass as our s...

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  9. Discuss, whether the weight of a body should be greater in night when ...

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  10. A tunnel is dug through the centre of the earth. Show that a body of m...

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  11. Suppose that the gravitational force varies inversely as the nth power...

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  12. Average density of the earth

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  13. The change in the value of g at a heighth above the surface of the ear...

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  14. If g is the acceleration due to gravity on the earth's surface, what w...

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  15. Energy required to move a body of mass m from an orbit of radius 2 R t...

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  16. What will be the kinetic energy needed to project a body of mass m fro...

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  17. Two bodies of masses m and 4 m are placed at a distance r. The gravita...

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  18. A particle of mass 10g is kept on the surface of a uniform sphere of m...

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  19. The escape velocity of a particle of mass m varies directly as

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  20. A planet in a distant solar system is 10 times more massive than the e...

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