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In planetary motion the areal velocity o...

In planetary motion the areal velocity of possition vector of a planet depends of angular velocity `(omega)` and the distance of the planet from sun (r). If so the correct relation for areal velocity is

A

`(dA)/(dt) prop omega r`

B

`(dA)/(dt) prop omega^(2) r`

C

`(dA)/(dt) prop omegar^(2)`

D

`(dA)/(dt)prop sqrt(omega r)`

Text Solution

Verified by Experts

The correct Answer is:
C

`(dA)/(dt)=L/(2m)implies(dA)/(dt)prop vr prop omegar^(2)`
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NARAYNA-GRAVITATION-EXERCISE -I (H.W.)
  1. In planetary motion the areal velocity of possition vector of a planet...

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  2. If a and b are the nearest and farthest distances of a planet from the...

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  3. A planet is revolving round the sun in an elliptical orbit, If v is th...

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  4. The period of a satellite in a circular orbit of radius R is T, the pe...

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  5. The period of revolution of an earth's satellite close to the surface ...

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  6. If a planet of mass m is revolving around the sun in a circular orbit ...

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  7. The period of revolution of a planet around the sun in a circular orbi...

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  8. A planet moves around the sun in an elliptical orbit. When earth is cl...

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  9. A planet of mass m is the elliptical orbit about the sun (mlt ltM("sun...

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  10. The gravitational force between two particles of masses m(1) and m(2) ...

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  11. The mass of a ball is four times the mass of another ball. When these ...

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  12. Gravitational force between two point masses m and M separated by a di...

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  13. Three uniform spheres each of mass m and diameter D are kept in such a...

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  14. A 3kg mass and 4kg mass are placed on X and Y axes at a distance of 1 ...

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  15. The height at which the value of g is half that on the surface of the ...

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  16. The depth at which the value of g becomes 25% of that at the surface o...

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  17. If the radius of the earth decreases by 10%, the mass remaining unchan...

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  18. The acceleration due to gravity at the poles is 10ms^(-2) and equitori...

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  19. The maximum horizontal range of projectile on the earth is R. Then for...

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  20. A particle hanging from a massless spring stretches it by 2 cm at the ...

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