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Two masses 800 kg and 600 kg are at a di...

Two masses 800 kg and 600 kg are at a distance of 0.25 m apart. Calculate the gravitational potential at a point distant 0.02 m from 800 kg mass and 0.15 m from 600 kg mass. `G=6.67xx10^(-11)N*m^2*kg^(-1)`.

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The correct Answer is:
`2.93xx10^(-6) J*kg^(-1)`.
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The mean orbital radius of the earth around the sun is 1.5xx10^8 km . Calculate the mass of the sun if G=6.67xx10^(-11)N*m^2*kg^(-2) .

Two piece of iron are kept at a distance of 20 cm. The mass of each of the piece is 100 kg. What is the gravitational force acting between them ? Given , g=6.67xx10^(-11) N*m^2*kg^(-2) .

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Two heavy spheres each of mass 100 kg and radius 0.10 m are placed 1.0 m apart on a horizontal table. What is the gravitational force and potential at the mid-point of the line joining the centres of the spheres ? Is an object placed at that point in equilibrium ? if so, is the equilibrium stable or unstable ?

A rocket is fired from the earth toward the sun. At what distance from the earth's centre is the gravitational force on the rocket is zero . Mass of the sun= 2xx10^30 kg , mass of earth = 6xx10^24 kg. Orbita radius= 1.5 xx 10^11 m. Neglect the effect of other planets etc.

Calculate the kinetic energy of a moving electron which has a wavelength of 4.8 pm. [mass of electron = 9.11 xx 10^(-31) kg, h = 6.626 xx 10^(-34) Kg m^2s^(-1) ].

CHHAYA PUBLICATION-NEWTONIAN GRAVITATION AND PLANETARY MOTION-PROBLEM SET -I
  1. A body weight 90 kgf on the surface of earth. How much will it weight ...

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  2. The radius of the earth is 6.38 xx10^8 cm. its mean density is 5.5 g*c...

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  3. Two masses 800 kg and 600 kg are at a distance of 0.25 m apart. Calcul...

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  4. At what height above the surface of the earth will the acceleration du...

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  5. At what height above the surface of the earth will the acceleration du...

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  6. At what depth below the surface of the earth will the acceleration due...

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  7. If the mass of the earth is 6xx10^(27)g and its radius 6400 km, what w...

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  8. If the radius of the earth is 6400 km, g=9.8 m*s^(-2) and G=6.7xx10^(-...

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  9. Show that if the earth stops rotating about its axis, then the acceler...

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  10. Choose the correct alternative : (i) Acceleration due to gravity (in...

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  11. Choose the correct alternative : (ii) Acceleration due to gravity (i...

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  12. Choose the correct alternative : (iii) Acceleration due to gravity i...

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  13. Choose the correct alternative : (iv) The formula -GMm(1//r2-1//r1) ...

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  14. If both the radius and the mean density of a planet are half the radi...

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  15. Calculate the angular velocity of the earth for which effective accele...

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  16. Find the percentage decrease in the weight of a body when taken 32 km...

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  17. The density of a planet is 1/3 rd that of the earth and its radius is ...

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  18. Determine the value of the escape velocity from the surface of the moo...

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  19. The radius of a planet is double than that of the earth but their aver...

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  20. How much energy would be needed for a body of mass 10 kg to escape fro...

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