The reason why two earths landed at the same time, read what inspired two earths to land at the same

First of all, according to research, in fact Galileo did not go to the Leaning Tower to do this experiment, this experiment should be a lie that baptized the human mind beautifully and greatly!

Secondly, Newtonian mechanics (or classical mechanics) can know that the acceleration of an object a is determined by the resultant external force f=m*a, so a=f m. After ignoring the force of air on the two iron balls (if you take a feather, I have nothing to say3), the objects are only subject to gravity, so their acceleration, after removing the respective m, is equal to g (approximately equal to, so as long as on the same planet, one component of gravity (i.e., gravity) does not change, and if gravity is only examined, then they fall to the ground at the same time3!!

Problems in junior high school!! Guy!!

This problem can be explained according to the laws of free fall motion of classical mechanics.

Suppose two objects fall from rest, ignoring the air resistance, and get s = acceleration * time squared, then time = root number (displacement acceleration), since the acceleration is gravitational acceleration and the displacement is the same, so the time is the same!

Two iron balls hit the ground at the same time.

Because in the process of falling, it starts from rest, and the initial velocity is the same. Then the vertical fall is only related to the acceleration due to gravity. Air resistance is generally ignored. So that's it.

From h=1 2gt*, t =(2h g)1*2, since they are at the same height, when the air resistance is ignored, the two iron balls will fall to the ground at the same time.

If the above is too boring, take a look at this:

Tie a 10kg and a 1kg iron ball with a string.

Assuming that the object with a large mass falls quickly, then this 11kg combination should have a greater mass than a 10kg iron ball, and the falling speed should be faster; But at the same time, it can be considered like this: in this combination, since the ball of 1kg falls slower than that of 10kg, it will drag the big ball, and the falling speed is slower than that of the big ball, contradictory!

The acceleration due to gravity is the same, and because the mass of the iron ball is large, the air resistance is negligible, so the actual acceleration can be said to be the same. The acceleration is the same, and the drop height is the same, so they land at the same time.

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Louzhu can bring 2 Earths to the ground at the same time, which is impossible for even Superman to do.

The fall acceleration of all objects is meters and seconds. (in the absence of air resistance).

That's why.

The Leaning Tower of Pisa is a classic experiment, because the gravitational acceleration is the same, H(1 2)GT2, of course, the initial velocity must be equal

And the correction is that the iron ball is not the earth!

In a vacuum, it is absolutely simultaneous landing, and ignoring air resistance in the air can also be seen as falling at the same time.

Because they have the same acceleration g, and the velocity is the same at each moment, they land at the same time.

Because the force that the earth does to them is equal in proportion.

The initial displacement, initial velocity and acceleration are the same.

Listen to my explanation and see if it's okay.

First of all, although the mass of the two balls can be ignored, the volume should be the same. And the body shape is the same, and the surface is the same as the smooth cross. In this case, the resistance will be the same.

Then it should be the same initial velocity and the same acceleration, so the velocity of the two balls falling is the same. Therefore, when a place of the same height falls at the same time, it takes the same amount of time.

T = h v, t time, h height, v average velocity.

h is the same, v depends on the acceleration, the acceleration of the earth to any object is the same! , so t1=t2

If the initial velocity is the same, it can land at the same time. Because, s=vt+1 2gt2 (2 is the meaning of square) has the same initial velocity, the same gravitational acceleration, and the same distance passed, so it can land at the same time, which is in an ideal situation, that is, there is no air resistance, if there is air resistance, it may not be able to land at the same time.

The acceleration they experience on gravity is the same, both at 10 meters per square second

First of all, the topic is two iron balls hitting the ground at the same time.

This in the text refers to the things mentioned earlier:

He thought: If this sentence is true, then tie these two iron balls together, and the one that falls slowly will drag the one that falls fast, and the speed of falling should be slower than that of a 10-pound iron ball; However, if you look at the two iron balls tied together as a whole, they weigh 11 pounds and should fall faster than the 10-pound iron balls.