An elevator is moving upwards with constant velocity of 'v'. What is the weight of a person of a mass 'm' inside the elevator during upward motion?
Correct answer: B. mg
- A. mg + mv
- B. mg
- C. mg ― mv
- D. Zero
Explanation
The weight of an object is defined as the force of gravity on the object and is calculated as the mass times the acceleration of gravity, w = mg. This does not change when the elevator is moving because it doesn't effect the mass of the person and the gravitational acceleration.
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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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