Satellite Motion

Q. If the radius of the Earth were to double, what would happen to the gravitational force experienced by a satellite in low Earth orbit?
  • A. It would double
  • B. It would remain the same
  • C. It would decrease to one-fourth
  • D. It would increase to four times
Q. If the radius of the orbit of a satellite is doubled, what happens to its orbital speed?
  • A. It remains the same
  • B. It doubles
  • C. It increases by a factor of √2
  • D. It decreases by a factor of √2
Q. In which of the following scenarios does a satellite experience weightlessness?
  • A. When it is stationary on the ground
  • B. When it is in free fall
  • C. When it is at rest in space
  • D. When it is moving at constant speed
Q. The gravitational force acting on a satellite in orbit is dependent on which of the following?
  • A. Mass of the satellite only
  • B. Mass of the Earth only
  • C. Distance from the Earth
  • D. All of the above
Q. The time period of a satellite in a low Earth orbit is approximately how many minutes?
  • A. 90 minutes
  • B. 60 minutes
  • C. 120 minutes
  • D. 30 minutes
Q. What happens to the gravitational force on a satellite as it moves further away from the Earth?
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It becomes zero
Q. What happens to the gravitational force on a satellite as it moves to a higher orbit?
  • A. It increases.
  • B. It decreases.
  • C. It remains constant.
  • D. It becomes zero.
Q. What happens to the gravitational force on a satellite if its altitude is doubled?
  • A. It doubles
  • B. It remains the same
  • C. It becomes four times weaker
  • D. It becomes eight times weaker
Q. What happens to the gravitational potential energy of a satellite as it moves further away from the Earth?
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It becomes zero
Q. What happens to the gravitational potential energy of a satellite as it moves to a higher orbit?
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It becomes zero
Q. What is the effect of atmospheric drag on satellites in low Earth orbit?
  • A. It increases their speed.
  • B. It decreases their speed.
  • C. It has no effect.
  • D. It causes them to gain altitude.
Q. What is the effect of increasing the altitude of a satellite on its orbital period?
  • A. It decreases
  • B. It increases
  • C. It remains the same
  • D. It becomes zero
Q. What is the effect of increasing the height of a satellite on its orbital speed?
  • A. Increases speed
  • B. Decreases speed
  • C. No effect
  • D. Doubles speed
Q. What is the effect of increasing the mass of a satellite on its orbital radius if the orbital speed is to remain constant?
  • A. The orbital radius must increase
  • B. The orbital radius must decrease
  • C. The orbital radius remains the same
  • D. It has no effect on the orbital radius
Q. What is the effect of increasing the mass of a satellite on its orbital radius, assuming the speed remains constant?
  • A. The orbital radius increases
  • B. The orbital radius decreases
  • C. The orbital radius remains the same
  • D. It depends on the gravitational force
Q. What is the effect of increasing the mass of a satellite on its orbital radius?
  • A. It increases the orbital radius.
  • B. It decreases the orbital radius.
  • C. It has no effect on the orbital radius.
  • D. It depends on the altitude.
Q. What is the effect of increasing the mass of a satellite on its orbital speed?
  • A. Increases the orbital speed
  • B. Decreases the orbital speed
  • C. No effect on orbital speed
  • D. Depends on the altitude
Q. What is the escape velocity for a satellite to leave Earth's gravitational field?
  • A. 7.9 km/s
  • B. 11.2 km/s
  • C. 9.8 km/s
  • D. 5.0 km/s
Q. What is the escape velocity for a satellite to leave the Earth's gravitational field?
  • A. 7.9 km/s
  • B. 11.2 km/s
  • C. 9.8 km/s
  • D. 5.0 km/s
Q. What is the escape velocity for a satellite to leave the Earth's gravitational influence?
  • A. 11.2 km/s
  • B. 7.9 km/s
  • C. 9.8 km/s
  • D. 15.0 km/s
Q. What is the gravitational force acting on a satellite of mass m in orbit at a height h above the Earth's surface?
  • A. GmM/(R+h)^2
  • B. GmM/R^2
  • C. GmM/(R-h)^2
  • D. GmM/(R+h)
Q. What is the gravitational potential energy of a satellite of mass m at a height h above the Earth's surface?
  • A. -GMm/R
  • B. -GMm/(R+h)
  • C. -GMm/(R-h)
  • D. -GMm/(R^2 + h^2)
Q. What is the minimum speed required for a satellite to achieve a low Earth orbit?
  • A. 7.9 km/s
  • B. 11.2 km/s
  • C. 5.0 km/s
  • D. 9.8 km/s
Q. What is the minimum speed required for a satellite to maintain a low Earth orbit?
  • A. 7.9 km/s
  • B. 11.2 km/s
  • C. 5.0 km/s
  • D. 9.8 km/s
Q. What is the orbital speed of a satellite in a circular orbit at a height h above the Earth's surface?
  • A. sqrt(GM/R^2)
  • B. sqrt(GM/(R+h)^2)
  • C. sqrt(GM/(R-h)^2)
  • D. sqrt(GM/R)
Q. What is the orbital speed of a satellite in a low Earth orbit (LEO) approximately 2000 km above the Earth's surface? (2000)
  • A. 7.9 km/s
  • B. 11.2 km/s
  • C. 5.0 km/s
  • D. 3.0 km/s
Q. What is the period of a satellite in a circular orbit at a height of 300 km above the Earth's surface?
  • A. 90 minutes
  • B. 60 minutes
  • C. 120 minutes
  • D. 30 minutes
Q. What is the period of a satellite in a low Earth orbit (LEO) compared to a satellite in a geostationary orbit?
  • A. Longer than a geostationary orbit
  • B. Shorter than a geostationary orbit
  • C. Equal to a geostationary orbit
  • D. Depends on the mass of the satellite
Q. What is the primary force acting on a satellite in a stable orbit around the Earth?
  • A. Gravitational force
  • B. Electromagnetic force
  • C. Frictional force
  • D. Centrifugal force
Q. What is the relationship between the height of a satellite and its orbital period?
  • A. Directly proportional
  • B. Inversely proportional
  • C. No relationship
  • D. Exponential relationship
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