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Lina20 [59]
3 years ago
10

You are standing on a scale in an elevator. suddenly you notice your weight decreases. what do you conclude? a. the elevator is

accelerating downwards. b. the elevator is accelerating upwards. c. the elevator is moving at a constant velocity upwards. d. your diet is working. e. the elevator is moving at a constant velocity downwards.
Physics
1 answer:
solong [7]3 years ago
3 0

Answer:

The elevator is accelerating downwards.

Explanation:

When an elevator accelerating downward it moves together with the person inside and the weight of the person does not change, but if the person is standing on a scale the contact force between the person and the scale is reduced.  The scale therefore has to push upward with less force on the person to support the person's weight. Therefore the Normal Force is smaller, so the reading on the scale becomes less than the true weight.

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Answer:

Part a)

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As we know that when both the forces are acting on the object in same direction then we will have

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now we will have

F_A + F_B = 10.6(0.554)

F_A + F_B = 5.87 N

Now two forces are in opposite direction then we have

F_A - F_B = 10.6(0.313)

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Part A)

Now we will have from above two equation

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Part B)

Similarly for other force we have

F_B = 1.28 N

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