Universal law of gravitation and gravitational potential - Question Bank
1. The gravitational force between two point masses is attractive and acts along the line joining their centers. This statement is a part of:
2. The gravitational potential at a point is zero if:
3. What is the gravitational potential energy of a system of three masses m, 2m, and 3m placed at the vertices of an equilateral triangle of side a?
4. The gravitational force between two point masses is given by F = G(m₁m₂)/r². If the masses are doubled and the distance is also doubled, the new force will be:
5. If the distance between two masses M and m is increased from r to 2r, the gravitational potential energy changes by a factor of:
6. The gravitational potential at a point is the work done by an external agent against the gravitational field to bring a unit mass from infinity to that point.
7. The gravitational force between two bodies is dependent on:
8. The gravitational potential energy of a system of two identical masses m separated by a distance r is:
9. If the Earth's mass is doubled and its radius is halved, the acceleration due to gravity on its surface would become:
10. The gravitational force between two point masses is independent of the nature of the medium separating them. This property is similar to:
11. Which of the following statements is correct regarding gravitational potential?
12. If the mass of the Earth is M and its radius is R, the gravitational potential energy of a mass m at its surface is approximately:
13. The gravitational field strength due to a point mass M at a distance r is given by:
14. The work done by gravity when a mass moves from infinity to a point at distance r from a mass M is:
15. If two masses are moved farther apart, their gravitational potential energy:
16. What is the gravitational potential at the center of a uniform solid sphere of mass M and radius R?
17. The gravitational force between two point masses is proportional to:
18. If the radius of the Earth is R, the gravitational potential energy of a mass m at a height h above the surface is:
19. The gravitational potential energy of a system of two particles is zero when:
20. The gravitational field strength at a point is defined as the gravitational force per unit:
21. If the mass of the Earth becomes twice its present value, what would be the gravitational potential energy of a satellite of mass m in the same orbit?
22. The gravitational force between two masses is a conservative force. This implies that:
23. If the distance between two point masses is halved, the gravitational potential energy between them:
24. What is the gravitational potential at the surface of the Earth (radius R, mass M)?
25. The gravitational potential energy of a system of n particles is the sum of the potential energies of all possible pairs of particles.
26. If the Earth suddenly stops rotating, the weight of a person standing on the equator will:
27. The gravitational force between two point masses is proportional to the inverse square of the distance between them. This is known as the:
28. Gravitational potential is a measure of potential energy per unit:
29. If the radius of the Earth were to decrease by 1%, what would be the approximate change in the acceleration due to gravity on its surface, assuming mass remains constant?
30. The gravitational potential inside a uniform solid sphere of mass M and radius R at a distance r from the center (r < R) is given by:
31. The value of the gravitational constant G was first measured experimentally by:
32. If a body of mass m is at a distance r from the center of the Earth (mass M), its gravitational potential energy is -GMm/r. If the body moves to a distance 2r, its potential energy will become:
33. The gravitational force exerted by the Earth on the Moon is equal in magnitude to the gravitational force exerted by the Moon on the Earth. This is an application of:
34. What is the gravitational potential energy of a mass 'm' at a distance 'r' from a mass 'M'?
35. The gravitational field strength at a point is equal to the negative gradient of the gravitational potential.
36. The gravitational potential at the center of a uniform spherical shell of mass M and radius R is:
37. The gravitational force between two point masses m1 and m2 separated by a distance r is F. If the distance is reduced to r/2, the new force will be:
38. If we move from the surface of the Earth towards its center, the gravitational potential:
39. The gravitational potential energy of a system of two masses is defined as the work done by an external agent against the gravitational force to separate the masses to an infinite distance. What is its sign?
40. Gravitational potential is a:
41. What is the dimension of the gravitational constant G?
42. The gravitational force between two masses is independent of:
43. If the mass of one of the bodies is doubled, while the distance remains the same, the gravitational force between them:
44. The gravitational potential due to a point mass 'M' at a distance 'r' is given by:
45. What is the gravitational potential at infinity?
46. Gravitational potential at a point is defined as the work done in bringing a unit mass from infinity to that point. What is the sign of gravitational potential?
47. The universal law of gravitation was formulated by:
48. If the distance between two point masses is doubled, the gravitational force between them becomes:
49. The gravitational force between two bodies is:
50. According to Newton's universal law of gravitation, the force of attraction between two point masses is directly proportional to: