Free fall: characteristics of the given physical index

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2019-06-20 03:20:20

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The Free fall is the motion of bodies under the action of gravity. If some object falls in air, it begins to operate and the resistance of the medium, so this movement cannot be considered as free fall, which is only possible in a vacuum.

freefallValue which shows the rate of this index, called the acceleration of free fall. It goes straight down and is the same for all bodies (regardless of their mass, but in the absence of resistance). This pattern is reflected in the law, which was installed Galileo Galilei: all bodies approach the earth with the same acceleration, reaching the surface at the same time, if they are not extraneous factors.

To Ensure that the free fall is characterized by such regularities, it is easy enough using the handset Newton (the so-called stroboscopic method). This glass tube, the length of which reaches 1 meter. One of its ends sealed, the other is the tap. If you put the pellet, plug and feather, and then the tube is quickly inverted, it is possible to see a certain feature - all the bodies reach bottom at different times. The first will drop the pellet, after her tube, the latter will be a feather. It is worth noting that in this way drop body only when the tube is air. If you pump special pump, and then flip the tube Newton's, you can be sure that all three objects will fall at the same time. This is the free fall.free fall is a

It is Worth noting that this phenomenon has certain peculiarities depending on the geographical location of the area. So, free fall is characterized by the maximum acceleration at the pole. At the equator it reaches the lowest value of 9.75 m/S2. How can we explain this difference?

Among the main reasons for the slight deviation of the digital values of the acceleration in free fall, you can call the daily rotation of the planet around its axis, a change in its spherical shape, and the unequal distribution of the earth's species.

the speed of free fall of man

In addition, a certain influence of the body height above the planet's surface. If not to take into account the Earth's rotation, if increasing the acceleration of gravity is somewhat reduced. It should be noted that for small height this parameter is considered constant, and the body characterized by uniformly accelerated motion.

I Must say that there is a record pertaining to skydiving from the stratosphere. It was set by Austrian skydiver Felix Baumgartner. He has overcome a height which amounted to more than 38 kilometers above the Earth's surface. Now, on account of the guy highest parachute jump, and the maximum speed of free fall of man, which exceeded the speed of sound. His flight lasted about 4 minutes, Felix opened the parachute and made a safe landing on the ground, easily setting a new record.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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