Doe a body which orbits the earth become heightless?

Answer 1

It does not become weightless but appears to be so. Normally we associate weight with mass. In that sense a body can become weightless only when its mass is zero, but then the body will not exist. We also associate weight with the force with which earth attracts the body. For an orbiting body earth is attracting the body that is why it is orbiting. If you have a body attached to a spring balance fixed to a support held by you. You feel the weight of the body and also read it on the balance. But now you hold the balance and just fall from a small height. You will no longer feel the weight of the body spring will be not in tension, spring balance would show you any reading. In this sense it loses weight. An orbiting object is equivalent to a freely falling object. You must have observed astronauts in an orbiting spaceship. He just floats inside the ship. He does not get any reaction from the floor which he would have normally got if he had been standing still on earth.

Answer 2

Heightless? no.
Weightless? Yes. Weight is a function of gravitic attraction
W=1/sqrt D
Massless? No. Mass is a measure of the amount of material in an object. The amount of material does not change with gravitic attraction.
Ergo, a mass of 100 Kg at sea level will have a mass of 100Kg while in orbit but a _weight_ of µgrams.

Answer 3

Assuming that you mean "weightless," the answer would be yes. Understand that gravity is still acting on the object and it is constantly trying to fall to the center of the earth. The speed the object is moving allows the object to move so fast that it falls at a rate that coincides with the curvature of the earth.

For example, the Space Shuttle has to travel about 17,500 mph to maintain its orbit. The slightest change allows it to return to the atmosphere (17,300 mph inital reentry speed).

Answer 4

If you drive around a corner really fast, the force you experience towards the car door is called the centripetal force.
A satellite in orbit is traveling at just the right speed so that the centripetal force upwards is exactly canceled out by the gravitational force downwards, this means that the net force on the satellite is zero, so it is weightless.

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Answer 5

are you talking about a human body?If so it grows a few inches over a day or so due to the spinal fluid helping the vertebrae to enlongate,as your weightless you don,t really notice, when you return to earth gravity the spine (and other joints) return to normal.
I hope this answers your Q

Answer 6

I don't think the body height changes just because gravity lessens. Weight changes and speed of movement since there is less friction.

Answer 7

Yes, astronauts are up to 2 inches taller while they're in space.

Answer 8

Heightless? Do you mean weightless?

Answer 9

weightless yes heightless no i think that was the answer you wanted

Answer 10

huh ?? try again in english -thanks