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The gravitational force between two bodi...

The gravitational force between two bodies is decreased by `36%` when the distance between them is increased by `3m`. The initial distance between them is

A

6m

B

9m

C

12m

D

15m

Text Solution

Verified by Experts

The correct Answer is:
C
`F=(Gm_(1)m_(2))/(R^(2))impliesF prop 1/(R^(2))`
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NARAYNA-GRAVITATION-EXERCISE -II (H.W.)
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  2. Two leads spheres of same radii are in contact with eacth other. The g...

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  3. The gravitational force between two bodies is decreased by 36% when th...

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  4. Two particle of masses m and 2m are at a distance 3r apart at the ends...

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  5. If the distance between two bodies is increased by 25%, then the % cha...

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  6. Three point masses each of mass m rotate in a circle of radius r with ...

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  7. The angular momentum (L) of the earth revolving round the sun uis prop...

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  8. Four particles having masses, m, 2m, 3m, and 4m are placed at the four...

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  9. If the radius of the earth is made three times, keeping the mass const...

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  10. The difference in the value of g at poles and at a sphere of latitude,...

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  11. The angular velocity of the earth's rotation about its axis is omega. ...

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  12. The radius and acceleration due to gravity of the moon are 1/4 and 1/5...

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  13. The difference in the value of g at poles and at a latitude is 3/4R om...

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  14. A particle hanging from a spring stratches it by 1cm at earth's surfac...

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  15. A tunnel is dug along a diameter of the earth. Find the force on a par...

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  16. The mass of the earth is 9 times that of the mars. The radius of the e...

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  17. The escape velocity of a body from the earth is 11.2 km//s. If a body ...

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  18. A particle is kept at rest at a distance R (earth's radius) above the ...

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  19. 16 kg and 9kg are separated by 25m. The velocity with which a body sho...

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  20. The escape velocity from the earth is about 11 km/s. The escape veloci...

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