Gravitation

Q. What is the weight of a 10 kg object on the surface of a planet where g = 12 m/s²?
  • A. 120 N
  • B. 100 N
  • C. 80 N
  • D. 60 N
Q. What is the weight of a 10 kg object on the surface of the Earth? (g = 9.8 m/s²)
  • A. 9.8 N
  • B. 19.6 N
  • C. 98 N
  • D. 0.98 N
Q. What is the work done in moving a mass from a point A to point B in a uniform gravitational field?
  • A. Depends on the path taken
  • B. Zero
  • C. Equal to the change in gravitational potential energy
  • D. Equal to the gravitational force times distance
Q. What is the work done in moving an object from a point A to point B in a uniform gravitational field?
  • A. Depends on the path taken
  • B. Zero
  • C. Depends on the mass of the object
  • D. Depends on the height difference
Q. What is the work done in moving an object from one point to another in a gravitational field?
  • A. Depends on the path taken
  • B. Is always zero
  • C. Depends only on the initial and final positions
  • D. Is maximum at the highest point
Q. What type of orbit does a satellite in a geosynchronous orbit have?
  • A. Elliptical orbit
  • B. Circular orbit
  • C. Parabolic orbit
  • D. Hyperbolic orbit
Q. Which of the following correctly describes gravitational field lines?
  • A. They point away from the mass.
  • B. They are always straight lines.
  • C. They never intersect.
  • D. They can be closed loops.
Q. Which of the following correctly describes gravitational potential energy?
  • A. It is a scalar quantity.
  • B. It is a vector quantity.
  • C. It can be negative.
  • D. Both A and C.
Q. Which of the following correctly describes the gravitational field strength at a distance r from a mass M?
  • A. g = GM/r
  • B. g = GM/r²
  • C. g = Gm/r²
  • D. g = Gm/r
Q. Which of the following correctly describes the gravitational force between two objects?
  • A. It depends on the medium between them
  • B. It is independent of the distance between them
  • C. It is proportional to the product of their masses
  • D. It can be shielded by other masses
Q. Which of the following correctly describes the gravitational force?
  • A. It is always attractive
  • B. It can be repulsive
  • C. It acts only at short distances
  • D. It is stronger than electromagnetic force
Q. Which of the following correctly describes the relationship between gravitational potential and gravitational field?
  • A. Potential is the derivative of field.
  • B. Field is the derivative of potential.
  • C. Both are independent.
  • D. They are equal.
Q. Which of the following factors does NOT affect the gravitational force acting on a satellite?
  • A. Mass of the satellite
  • B. Mass of the Earth
  • C. Distance from the center of the Earth
  • D. Speed of the satellite
Q. Which of the following factors does NOT affect the gravitational force between a satellite and the Earth?
  • A. Mass of the satellite
  • B. Mass of the Earth
  • C. Distance between the satellite and the Earth
  • D. Speed of the satellite
Q. Which of the following factors does NOT affect the gravitational force on a satellite?
  • A. Mass of the satellite
  • B. Mass of the Earth
  • C. Distance from the center of the Earth
  • D. Speed of the satellite
Q. Which of the following factors does NOT affect the orbital period of a satellite?
  • A. Mass of the satellite
  • B. Height of the orbit
  • C. Mass of the Earth
  • D. Gravitational constant
Q. Which of the following factors does NOT affect the orbital speed of a satellite?
  • A. Mass of the satellite
  • B. Mass of the Earth
  • C. Radius of the orbit
  • D. Gravitational constant
Q. Which of the following is a characteristic of a polar orbiting satellite?
  • A. It orbits above the equator
  • B. It has a fixed position relative to the Earth
  • C. It passes over the poles
  • D. It is used for communication
Q. Which of the following is a consequence of Newton's law of gravitation?
  • A. The orbits of planets are elliptical
  • B. Masses repel each other
  • C. Gravitational force is a vector quantity
  • D. All objects fall at the same rate in a vacuum
Q. Which of the following is a consequence of the law of universal gravitation?
  • A. The orbits of planets are elliptical
  • B. All objects fall at the same rate in a vacuum
  • C. Gravity is a contact force
  • D. Mass does not affect gravitational attraction
Q. Which of the following is NOT a characteristic of a satellite in a stable orbit?
  • A. It experiences no net force.
  • B. It moves with constant speed.
  • C. It has a constant distance from the Earth.
  • D. It is in free fall.
Q. Which of the following is true about the escape velocity from the surface of the Earth?
  • A. It is independent of the mass of the object
  • B. It is dependent on the mass of the Earth
  • C. It is dependent on the radius of the Earth
  • D. All of the above
Q. Which of the following is true about the period of a satellite in a low Earth orbit compared to a satellite in a geostationary orbit?
  • A. The period is longer for the low Earth orbit
  • B. The period is shorter for the low Earth orbit
  • C. The periods are the same
  • D. The period depends on the satellite's mass
Q. Which of the following is true about the period of a satellite in a low Earth orbit compared to a satellite in a high Earth orbit?
  • A. The period is longer for low Earth orbit
  • B. The period is shorter for low Earth orbit
  • C. The periods are the same
  • D. It depends on the satellite's mass
Q. Which of the following is true for a satellite in a low Earth orbit?
  • A. It has a very high orbital speed
  • B. It has a very low orbital speed
  • C. It does not experience any gravitational force
  • D. It is not affected by atmospheric drag
Q. Which of the following orbits allows a satellite to cover the entire surface of the Earth over time?
  • A. Geostationary orbit
  • B. Polar orbit
  • C. Circular orbit
  • D. Elliptical orbit
Q. Which of the following orbits is used for weather satellites?
  • A. Geostationary orbit
  • B. Polar orbit
  • C. Elliptical orbit
  • D. Low Earth orbit
Q. Which of the following statements about geostationary satellites is true?
  • A. They orbit the Earth in a polar orbit
  • B. They have a period of 24 hours
  • C. They are closer to the Earth than low Earth orbit satellites
  • D. They can be used for global positioning
Q. Which of the following statements about gravitational potential energy (U) is true?
  • A. U increases as two masses move closer together
  • B. U decreases as two masses move closer together
  • C. U is always positive
  • D. U is independent of distance
Q. Which of the following statements about gravitational potential energy is true?
  • A. It is always positive.
  • B. It can be negative.
  • C. It is independent of the reference point.
  • D. It increases with distance.
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