A bird resting on the floor of an air-tight box which is being carried by a boy, starts flying. The boy will feel that the box is now:
Correct answer: B. Lighter
- A. Heavier in the beginning and lighter afterwards
- B. Lighter
- C. Shows no change in weight
- D. Heavier afterwards
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About Gravitation
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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