Microgravity
Q. What is microgravity?- Published on 18 Mar 16a. Effect of moon’s gravity on earthly objects
b. 1/6th part of gravity on earth
c. State of Weightlessness
d. Vaccum
ANSWER: State of Weightlessness
- The term micro-g environment (also µg, often referred to by the term microgravity) is more or less a synonym of weightlessness and zero-g, but indicates that g-forces are not quite zero, just very small.
- In microgravity, astronauts can float in their spacecraft - or outside, on a spacewalk. Heavy objects move around easily. For example, astronauts can move equipment weighing hundreds of pounds with their fingertips. Microgravity is sometimes called "zero gravity," but this is misleading.
- For the same reason microgravity exists in orbit, it can also be found on Earth. NASA uses airplanes to create microgravity for short periods of time. The airplane does this by flying in up-and-down parabolas. At the top of the parabola, people and objects inside the airplane are in free fall for about 20-30 seconds at a time. For the same reasons, a person can even experience free fall very briefly going over a large hill, like on a roller coaster. Microgravity also can be experienced in amusement park free-fall rides.
