Introduction to experiencing weightlessness
As we know that the earth attracts every another body towards its centre. The force with which the earth attracts another bodies is called the weight. The weight of the body on the earth is equal to the product of the mass of the body and the acceleration due to gravity of earth. Here we can say that the weight = mass × acceleration due to gravity = mg. The value of acceleration due to gravity (g) is not constant throughout the earth. The weight of the body changes as the value of the acceleration due to gravity changes. Here we discuss in which situation the weight of the body becomes zero that means the condition of the body is weightlessness.I like to share this Units for Acceleration with you all through my article.
Experiencing weightlessness and conditions related to it
The weight mg of the body is also known as the true weight or the static weight of the body. We become conscious for our weight, only when weight is opposed by some other object. Actually, the secret of measuring the weight of the body with the weighing machine lies in fact that as we place the body on the weighing machine, the weighing machine opposes the weight of the body. The reaction of the weighing machine gives the weight of the body. There are four main conditions in which the body becomes weightlessness. The four conditions are as follow:
(i) When the body falling freely under the gravity the weight of the body is zero. For example, a lift is falling freely; any ball falling from the tower etc. experiences the weightlessness.
(ii) When the satellite revolves in the orbit around the earth experiences weightlessness. The gravitational force acting towards the centre of the earth balances by the centripetal force acting on the body so that the weight is zero.
(iii) When the bodies are at null point in the outer space. After the certain height, the gravitational pull of the earth becomes less and it is more for moon so that the body will feel the attraction force towards the moon. At that particular height where the gravity of the earth balances by the gravity of moon, the body experiences weightlessness.
(iv) When we reach at the center of the earth, we feel weightlessness. As the value of the acceleration due to gravity at the centre of the earth is zero and so, the weight of the body at the centre of the earth is also zero.
Conclusion of experiencing weightlessness
Weightlessness causes very serious problems to the astronauts. It becomes quite difficult for them to control their movements. Everything in the artificial satellite has to be kept tied down. To overcome this problem we create the artificial gravity so that they do not feel the weightlessness.
As we know that the earth attracts every another body towards its centre. The force with which the earth attracts another bodies is called the weight. The weight of the body on the earth is equal to the product of the mass of the body and the acceleration due to gravity of earth. Here we can say that the weight = mass × acceleration due to gravity = mg. The value of acceleration due to gravity (g) is not constant throughout the earth. The weight of the body changes as the value of the acceleration due to gravity changes. Here we discuss in which situation the weight of the body becomes zero that means the condition of the body is weightlessness.I like to share this Units for Acceleration with you all through my article.
Experiencing weightlessness and conditions related to it
The weight mg of the body is also known as the true weight or the static weight of the body. We become conscious for our weight, only when weight is opposed by some other object. Actually, the secret of measuring the weight of the body with the weighing machine lies in fact that as we place the body on the weighing machine, the weighing machine opposes the weight of the body. The reaction of the weighing machine gives the weight of the body. There are four main conditions in which the body becomes weightlessness. The four conditions are as follow:
(i) When the body falling freely under the gravity the weight of the body is zero. For example, a lift is falling freely; any ball falling from the tower etc. experiences the weightlessness.
(ii) When the satellite revolves in the orbit around the earth experiences weightlessness. The gravitational force acting towards the centre of the earth balances by the centripetal force acting on the body so that the weight is zero.
(iii) When the bodies are at null point in the outer space. After the certain height, the gravitational pull of the earth becomes less and it is more for moon so that the body will feel the attraction force towards the moon. At that particular height where the gravity of the earth balances by the gravity of moon, the body experiences weightlessness.
(iv) When we reach at the center of the earth, we feel weightlessness. As the value of the acceleration due to gravity at the centre of the earth is zero and so, the weight of the body at the centre of the earth is also zero.
Conclusion of experiencing weightlessness
Weightlessness causes very serious problems to the astronauts. It becomes quite difficult for them to control their movements. Everything in the artificial satellite has to be kept tied down. To overcome this problem we create the artificial gravity so that they do not feel the weightlessness.
