Answers

2014-03-22T12:19:54+05:30
Because magnitude of non contact forces decreases with the increase in separation... in space due to a lot of separation between the shuttle and any planet the gravitational force becomes almost zero hence the space shuttle becomes weightless.

0
so if their gravity is almost zero then space shuttle should go out of its orbit why it continues to revolve...??
Because it has a speed which remains constant
oh k i agree it has a constant speed but in which direction...
The constant speed is in a direction tangential to the orbit. With the earth's gravity pulling down and the tangential path, a circular or elliptical orbit is formed
2014-03-22T12:49:33+05:30
In space we feel weightlessness because the earth's gravity has less effect on us. Why do we not see the effect of the gravitational force between the various objects in a spacecraft? We see them floating around. Since the objects in a spacecraft are comparatively close to each other we should be able to see the gravitational effect between them.
0
you are not clear with the question ok tell me why any object float in the space???