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Naddika [18.5K]
2 years ago
8

How do the individual forces compare when the rider experiences a sensation being lighter than his normal weight ? What is the a

cceleration direction when this occurs ?
Physics
1 answer:
shusha [124]2 years ago
6 0

Answer:

When the elevator is accelerating downward, the person feels lighter due to the downward normal force being less than the person's weight.

Explanation:

A person riding in an elevator subjected to a series of unbalanced forces depending on the direction the elevator is travelling.

Two forces are acting on the person; the force of gravity and the upward normal force from the elevator.

When the elevator is going upwards with acceleration a, the person feels heavier than his normal weight, due to the upward normal force being greater than the person's weight. N = mg + ma

When the elevator is moving downwards with acceleration a, the person feels lighter due to the downward normal force being less than the person's weight. N = mg - ma

However, when the elevator is moving up or down at constant velocity ie. acceleration a = 0, the person experience a normal force equal to weight. N = mg

When the elevator is moving downwards with acceleration a = g, the person experiences weightlessness. N = (mg - mg) = 0

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Answer:

0.2 m/s^2

Explanation:

initial speed 14m/s

final speed 20m/s

acceleration:

(20m/s - 14m /s) /30s = (6m/s)/30s = 0.2 m/s^2

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2 years ago
Nancy applies a force to a violin string by pulling her bow across it. The vibrations of the string produce sound waves, which c
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3 years ago
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swings a 5.5 kg cup of water in a vertical circle of radius 1.9 m. (a) What minimum speed must the cup have in this demo if the
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Answer:

4.32

Explanation:

The centripetal acceleration of any object is given as

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2 years ago
Who may drive a vehicle in Texas?
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Answer:

Yes

Explanation:

3 0
3 years ago
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Sarah, who lives in Australia notices that the length of the shadow of the flagpole is getting shorter every day when measured a
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Answer:

Time zone is one important factor in difference in location and this in turn affects the result of the resolution and rotation of shadow produced from the sun or other illumination.

Therefore someone at a place might see a clear large shadow due to shinny sun reflection and another a small or dull Shadow at same time if the intensity of the sun or lighting source is going down.

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The closer a body/object is to a lighting source the larger the shadow it produces, and the farther the body the smaller the shadow produced.

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