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Content 2 - WEIGHTLESSNESS


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  1. why do you astronauts feel weightless inside the orbiting spacecraft?

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    1. The force of gravity is the only force acting upon their body. The astronauts are in free-fall. ... Their tangential velocity allows them to remain in orbital motion while the force of gravity pulls them inward. Many students believe that orbiting astronauts are weightless because they do not experience a force of gravity.

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  2. the weight of a body at earth's surface is W.a At a depth half way to the centre of the earth ,it will be

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    1. The variation of 'g' depth is given by W/2

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  3. why an astronaut experiences weightlessness?

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    1. Earth-orbiting astronauts are weightless for the same reasons that riders of a free-falling amusement park ride or a free-falling elevator are weightless. They are weightless because there is no external contact force pushing or pulling upon their body.

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  4. Have you ever tripped and fallen down?

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    1. And I'm not talking like tripping on the last couple of steps, but tumbling head over heels the entire flight.

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  5. What’s the situation when you’re on the way to the moon ?

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    1. The Moon orbits Earth at an average distance of 382,400 kilometers. The lunar month is the 29.53 days it takes to go from one new moon to the next. During the lunar month, the Moon goes through all its phases.

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  6. What’s the explanation for their weightlessness in this situation ?

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    1. Weightlessness, or an absence of weight, is an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces (from floors, seats, beds, scales, etc.).

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  7. Why do astronauts appear to float in the space station?

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    1. They’re falling toward Earth and moving forward at about the same velocity. Because the downward and forward forces are nearly equal, the astronauts are not pulled in any specific direction, so they float.

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  8. Are astronauts really weightless?

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    1. astronauts engaging in hilarious space stuff in zero gravity. Look at them throwing bananas, playing Bowie songs, drinking floating juice balls, and generally having a gay old time in the weightlessness of deep space.

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    2. why are astronauts weightless in space?

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    3. Their tangential velocity allows them to remain in orbital motion while the force of gravity pulls them inward. Many students believe that orbiting astronauts are weightless because they do not experience a force of gravity.

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  9. why are astronauts weightlessness in space?

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    1. Their tangential velocity allows them to remain in orbital motion while the force of gravity pulls them inward. Many students believe that orbiting astronauts are weightless because they do not experience a force of gravity.

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  10. why do astronauts weightless inside a space ship and centrifugal force?

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    1. Earth-orbiting astronauts are weightless for the same reasons that riders of a free-falling amusement park ride or a free-falling elevator are weightless. They are weightless because there is no external contact force pushing or pulling upon their body.

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  11. hi sir
    why is space zero gravity?

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    1. Astronauts feel weightless because their shuttle is in a state of continuous free fall to the earth. ... If the spacecraft was not moving quickly enough, it would fall prey to the effects of earth's gravitational field and fall to the earth. There is no such thing as zero gravity in space

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  12. hi sir
    how much would you weight on the moon?

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    1. Since the Moon is smaller than Earth, it has a weaker gravitational pull. In fact, the Moon only has 1/6 the gravity that Earth does.

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  13. hello sir
    what does it mean to be weightlessness?

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    1. Weightlessness, or an absence of weight, is an absence of stress and strain resulting from externally applied mechanical contact-forces.

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  14. dear sir
    How does it feel to an astronaut in the space?

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    1. A part of expedition missions get to the space station, three people are crammed into a small space.

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  15. What does it mean be weightlessness?

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    1. Weightlessness, or an absence of weight, is an absence of stress and strain resulting from externally applied mechanical contact-forces.

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  16. Sir,
    Why does weightlessness occur

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    1. The "weightlessness" you may feel in an aircraft occurs any time the aircraft is accelerating downward with acceleration 1g.

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  17. Are objects in free fall are weightless

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    1. Video clips of astronauts show this vividly. A stationary observer watching from outside the satellite (or lift) will see all objects falling in exactly the same way. They are all in free fall. An object can only be truly weightless if there is no gravitational field.

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  18. What does it mean to be in a free fall

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    1. free fall definition. In physics, the motion of a body being acted upon only by gravity. A satellite in orbit is in free fall, as is a skydiver (if we neglect the effects of air resistance). During free fall, objects are said to be weightless.

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  19. Hi sir,
    Why is it important to know about free fall?

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    1. Any object that is being acted upon only by the force of gravity is said to be in a state of free fall. There are two important motion characteristics that are true of free-falling objects: Free-falling objects do not encounter air resistance.

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  20. hi sir,
    in moon they had a own gravity but why the astrounauts are weightless in moon?

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    1. Astronauts float around in space because there is no gravity in space. Everyone knows that the farther you get from Earth, the less the gravitational force.

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