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Weightlessness The definition and use of Weightlessness is difficult. Weight means the suck exerted by gravity, burdenless means the absence of such forces and burthenlessness officially means the condition of zero gravitative force. In popular use, however, weightlessness (often with quotation marks) has the meaning given in the precede paragraph. Astronauts and cosmonauts in the International Space Station be give tongue to 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 subject ara 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 very(prenominal) acceleration towards the earth. Consequently, in the frame of the space station, an unsupported mortal appears to father no acceleration and so his relative accomplish ment in this frame is the same as that of a mortal without weight in a spacecraft that is not accelerating. If objects argon removed from a star, planet, moon, or other such spacious body, so that they experience very little gravitational fundamental 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  poverty-stricken fall and are weightless. Physically, they both follow Newtons first law of motion which describes bilinear motion. Such a situation , except for microgravity effects and the in! homogeneity of the gravitational field cannot be distinguished from weightlessness due to the absence of gravity from a body nearby. As an example, an accelerate free fall trajectory results in the weightlessness of objects in a falling elevator. The same type of accelerated free fall trajectory causes weightlessness of objects in orbit  to the highest degree the Earth. Such objects 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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