Chapter 12 – Gravitation
The ratio of the kinetic energy required to be given to a satellite to escape from the earth’s gravity to the kinetic energy required to be given to it so that it moves in a circular orbit just above the earth’s surface is:
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Sep
The ratio of the kinetic energy required to be given to a satellite to escape from the earth’s gravity to the kinetic energy required to be given to it so that it moves in a circular orbit just above the earth’s surface is: If a satellite orbits as close to the earth's surface as possible [...]
The ratio of the radii of planets A and B is K1 and ratio of accelerations due to gravity on them is K2 The ratio of escape velocities from them will be:
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Sep
The ratio of the radii of planets A and B is K1 and ratio of accelerations due to gravity on them is K2 The ratio of escape velocities from them will be: The ratio of the radii of planets A and B is K1 and ratio of accelerations due to gravity on them is K2 [...]
The mass of a spaceship is 1000 kg. It is to be launched from the earths surface out into free space. The value of g and R (radius of earth) are 10 m/s and 6400 km respectively. The required energy for this work will be :
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Sep
The mass of a spaceship is 1000 kg. It is to be launched from the earths surface out into free space. The value of g and R (radius of earth) are 10 m/s and 6400 km respectively. The required energy for this work will be : If a satellite orbits as close to the earth's [...]
The escape velocity for a body projected vertically upwards from the surface of earth is 11 km/s. If the body is projected at an angle of 45 degree with the vertical, the escape velocity will be
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Sep
The escape velocity for a body projected vertically upwards from the surface of earth is 11 km/s. If the body is projected at an angle of 45 degree with the vertical, the escape velocity will be The escape velocity for a body projected vertically upwards from the surface of earth is 11 km/s. If the [...]
The escape velocity of a body from earths surface is Ve. The escape velocity of the same body from a height equal to 7R from the earths surface will be
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Sep
The escape velocity of a body from earths surface is Ve. The escape velocity of the same body from a height equal to 7R from the earths surface will be The escape velocity of a body from earths surface is Ve. The escape velocity of the same body from a height equal to 7R from [...]
A body is orbiting very close to the earth surface kinetic energy K.E. The energy required to completely escape from it is
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Sep
A body is orbiting very close to the earth surface kinetic energy K.E. The energy required to completely escape from it is A body is orbiting very close to the earth surface kinetic energy K.E. The energy required to completely escape from it is September 15, 2020 Category: Cengage NEET by C.P Singh , Chapter [...]
The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is
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Sep
The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is September 15, 2020 Category: Cengage NEET by C.P Singh , Chapter 12 - Gravitation , [...]
The escape velocity from the earth is 11 kms^−1. The escape velocity from a planet having twice the radius and same mean density as that of earth is
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Sep
The escape velocity from the earth is 11 kms^−1. The escape velocity from a planet having twice the radius and same mean density as that of earth is The escape velocity from the earth is 11 kms^−1. The escape velocity from a planet having twice the radius and same mean density as that of earth [...]
A satellite going round the earth in a circular orbit loses some energy due to a collision. Its speed is υ and distance from the earth is d.
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Sep
A satellite going round the earth in a circular orbit loses some energy due to a collision. Its speed is υ and distance from the earth is d. A satellite going round the earth in a circular orbit loses some energy due to a collision. Its speed is υ and distance from the earth is [...]
A satellite close to earth is in orbit above the equator with a period of rotation of 1.5 hrs. If it is above a point P on the equator at some time, it will be above P again after time.
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Sep
A satellite close to earth is in orbit above the equator with a period of rotation of 1.5 hrs. If it is above a point P on the equator at some time, it will be above P again after time. A satellite close to earth is in orbit above the equator with a period of [...]