An astronaut of weight, 'mg' is moving upwards in a rocket with an acceleration, '4g'. His apparent weight inside that rocket will be:
Correct answer: D. 5 mg
- A. zero
- B. mg
- C. 3 mg
- D. 5 mg
Explanation
The correct option is: D) 5 mg The apparent weight of an object is the force exerted by a supporting surface (such as a floor or a scale) on the object. In this case, the astronaut is moving upwards in a rocket with an acceleration of '4g'. The apparent weight (W') can be calculated using the following formula: W'=m ( g+a )----------------------- where w' is the apparent weight so W'=m x (g+4g) w'=5mg So, the apparent weight is 5 times the weight of the astronaut. Therefore, the apparent weight of the astronaut inside the rocket is 5mg and the correct option is D) 5 mg .
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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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