Jul 26, 2021 06:00:00

Which planet has the slowest ball falling in the solar system?

The magnitude of gravity varies from planet to planet, and it is known that the

acceleration of gravity of the earth is about 9.8 meters per second squared. Mr. James Odonohugh, who belongs to the Japan Aerospace Exploration Agency (JAXA) , has released a movie that visualizes this difference in gravitational acceleration by 'falling time when the ball is dropped from a point 1 km above the sky'.

A 1 Kilometer 'Ball Drop' On Solar System Bodies --YouTube


On the screen from left to right, 'Sun (SUN)' 'Mercury (MERCURY)' 'Venus (VENUS)' 'Earth (EARTH)' 'Moon (MOON)' 'Mars (MARS)' ' Ceres ' 'July' The planets and dwarf planets of the solar system such as (JUPITER), 'SATURN', 'URANUS', 'Neptune', and 'PLUTO' are lined up. In addition, the elapsed time and the speed at that time are displayed at the top of the screen.

In the sun, a ball that falls from 1 km above reaches the surface in just 2.7 seconds. The speed of the ball when it reaches the surface reaches 2663 km / h.

It reaches the surface on Jupiter 9.0 seconds after the start of the fall. The speed when reaching the surface is 801km / h.

It reaches the surface with Neptune after 13.4 seconds and Saturn after 13.8 seconds.

Then, 14.3 seconds later, the ball reached the surface of the earth. The speed at the time of arrival is 502km / h.

Then, 15.0 seconds later, the ball reached the surface on Venus and Uranus. After 23.2 seconds, it reached the surface on Mercury and Mars. At 23.2 seconds, the ball reached the starting point and the middle of the goal on the Moon, and still near the starting point on Ceres and Pluto.

The ball reached the surface of the moon 35.3 seconds after the start of the fall. The speed at the time of arrival is 203 km / h.

After 56.7 seconds, the ball reaches the surface of Pluto ...

After 84.3 seconds, it reached the surface even in Ceres, and the speed at the time of arrival was 91 km / h. In addition, it takes about 6 times longer than the earth (14.3 seconds) from the start of the fall to the arrival at the surface.

On Mr. Odonohue's

YouTube channel, there are many other space-related movies such as ' a movie that visualizes the speed required to escape from the gravitational sphere ' and 'a movie that visualizes the speed of light'.