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Weightlessness The definition and use of Weightlessness is difficult. Weight means the military capability exerted by gravity, burdenless means the absence of such forces and high spirits officially means the condition of zero gravitational force. In popular use, however, slantlessness (often with quotation marks) has the meaning given in the foregoing paragraph. Astronauts and cosmonauts in the International Space Station be say to meet weightlessness, even though, at an altitude of a hardly a(prenominal) blow km, their weight (the gravitational force acting on them) is exactly active 10% less than on earth. Their field of study has a large receptive quickening towards the earth and their weight is the centripetal force producing it. However, the space station has (almost) exactly the resembling acceleration towards the earth. Consequently, in the frame of the space station, an unsupported individual appears to father no acceleration and so his relative motili ty in this frame is the same as that of a someone without weight in a spacecraft that is not accelerating. If objects atomic number 18 removed from a star, planet, moon, or other such huge body, so that they experience very little gravitational interaction with them, they would speak to the condition of zero gravity. If they are close to a massive object, but are unornamentedly accelerating towards the mass by gravitational acceleration only, they are in  set free fall and are weightless. Physically, they both follow Newtons first law of motion which describes analog motion. Such a situation, except for microgravity effects and the in homogeneousness of the gravitational field cannot be distinguished from weightlessness collectible to the absence of gravity from a body nearby. As an example, an deepen free fall trajectory results in the weightlessness of objects in a falling elevator. The same type of accelerated free fall trajectory causes weightlessness of obje cts in orbit  intimately the Earth. Such o! bjects are in free fall toward the Earth, as in the falling elevator, but they...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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