When the downward acceleration of the elevator increased, the weight of the objects inside it will:
Correct answer: A. Decrease
- A. Decrease
- B. Increase
- C. Remain the same
- D. None of these
Explanation
The weight of an object is the force exerted on it due to gravity. On Earth, this force is usually equal to the gravitational force, and the weight is given by the formula: Weight=mass×gravitational acceleration If an elevator is accelerating downward, there is an additional force acting on the objects in the upward direction, which is the force they experience due to the acceleration. In this case, the net force acting on the objects is the difference between the gravitational force and the force due to acceleration. When the elevator accelerates downward, the net force acting on the objects is less than their weight alone (gravitational force), so the apparent weight of the objects decreases. This can create a feeling of reduced weight for the objects and occupants inside the elevator.
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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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