An astronaut in space with a life belt is attached to the spaceship outside. If the life belt is cut by accident:
Correct answer: A. He will continue moving in the orbit
- A. He will continue moving in the orbit
- B. He will fall to the earth
- C. He will go to the outer space
- D. None of these
Explanation
A is correct. As the astronaut was initially in a stable orbit around a celestial body (like Earth) and then the life belt was cut, the astronaut would continue to move in the same orbit unless acted upon by external forces. This is due to the principle of conservation of angular momentum in the absence of significant external forces.
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Newton’s law of universal gravitation relates the force between masses to their masses and separation, while gravitational field strength explains weight and orbital motion. The topic covers satellite velocity and period, escape ideas, weightlessness in free fall, and artificial gravity, which differs from ordinary gravitational attraction.
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