Earth Moon Escape Velocity Lab app for iPhone and iPad

Free App
https://itunes.apple.com/us/app/earth-moon-escape-velocity-lab/id1190227799?ls=1&mt=8
Pro App
https://itunes.apple.com/us/app/earth-moon-escape-velocity-lab-pro/id1245993225?ls=1&mt=8

About
an open source physics at Singapore simulation based on codes written by Andrew Duffy and Loo Kang WEE.
more resources can be found on support URL

Introduction
Every object sets up a gravitational field around itself due to its mass. When two objects enter each other’s gravitational fields, they will be attracted towards each other.
Hence, a gravitational field is a region of space in which any object that lies in it experiences a gravitational force towards the object that creates the field, due to its mass.
This Lab allows the inquiry of gravity concepts of field and potential for a two mass setup.


Interesting Fact
This app produce real numbers to coincident with the real world data.

Acknowledgement
My sincere gratitude for the tireless contributions of Francisco Esquembre, Fu-Kwun Hwang, Wolfgang Christian, Félix Jesús Garcia Clemente, Anne Cox, Andrew Duffy, Todd Timberlake and many more in the Open Source Physics community. I have designed much of the above based on their ideas and insights.
This research is supported by the eduLab project NRF2015-EDU001-EL021 , awarded by the Prime Minister Office, National Research Foundation (NRF), Singapore in collaboration with National Institute of Education (NIE), Singapore and the Ministry of Education (MOE), Singapore.