51. The two balls of iron and wood of same weight dropped from the same height, then
52. The sensation of weightlessness in a spacecraft in an orbit is due to the
53. What is the name of the force with which Earth pulls everything towards itself?
54. Consider the following statements. The escape velocity depends on
1. radius of the planet.
2. temperature of the planet.
3. mass of the planet.
4. mass of the particles escaping.
Select the correct answer:
1. radius of the planet.
2. temperature of the planet.
3. mass of the planet.
4. mass of the particles escaping.
Select the correct answer:
55. The value of acceleration due to gravity does not depend on . . . . . . . .
56. If the Earth stops rotating, the apparent value of g on its surface will
57. Two bodies kept at a certain distance feel a gravitational force F to each other. If the distance between them is made double the former distance, the force will be
58. A Geosynchronous satellite continuously active in its orbit due to centrifugal force which is obtained by
59. Who discovered the law of planetary motion?
60. The period of a satellite in a circular orbit around a planet is independent of
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