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CSR Racing 2


Education & Simulation & Games
Last Update
May 27, 2021
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Ratings & Reviews performance for DR.Orbit

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1404 chars

Demonstration of how a mass (e.g. earth) can orbit around a gravitational well (e.g. sun). Use your finger to push the mass onto a trajectory that results in a stable orbit around the well. Use the options menu to introduce some drag (good to get rid of the mass), to bring up some eye candy or to influence the movement of the mass by tilting your iPad. Physics background: Gravitational forces act between masses. In this demonstration a big stationary mass is situated in the center of the screen. Its location is fixed and it is hidden behind a cap. If you put a small mass onto the screen, it begins accelerating towards the big mass until it disappears under the cap "into the drain". You can prevent your mass from going down the drain by giving it an initial push. Try experimenting with the directions of your pushes. If it is done right, the small mass will be falling around the big mass without - in theory - ever disappearing into the drain. But due to the not very accurate numerical methods used for the calculation of the trajectory of the mass, the reality in this demonstration might be different. This also applies to the background grid on the screen: It does not show the correct wraping of space caused by the big mass in the middle of the screen. Its shape is a compromise between aesthetics and numerics. Link to demonstration video:

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Feb 08, 2015

Sure, the gravity well is pretty realistic. The app description doesn't tell you that the ball will bounce off the walls. The Accelerometer mode is pretty useless; the ball starts bouncing off the walls very quickly and gets sucked down the hole. There is no way to stop the ball once it is started in a stable orbit; you have to turn on friction or the accelerometer. It would be nice to be able to zoom, to adjust the masses or other parameters, or to insert multiple planets.

CSR Racing 2

About DR.Orbit

Developed by Dr. Daniel Roth.

DR.Orbit is ranking in   Education & Simulation & Games

Last update was at May 27, 2021and the current version is 1.06.

To see all other keys and revenue click here 697764304

DR.Orbit have a 1a user reviews.

DR.Orbit was released in the App Store. It is developed by Dr. Daniel Roth, who have also released the following apps.

DR.Orbit has 1 user reviews.​

DR.Orbit has an average rating of 2.0. ​The latest version of DR.Orbit 1.06​ ​​was ​released on May 27, 2021​.

You can download DR.Orbit ​here

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