Slow Motion with low FPS

(sorry for bad English, I'm Russian)

Hi, can you help me?

I make the game with physics behavior. In browsers, web nodekit *.exe - I have 60 fps. When I compile it to *.apk(with cocoonJS) on my mobile devices I have:

1) Galaxy Note 2 (without energy saving mode) - 60 fps (the game looks good and fast, like how it looks in browser and *.exe)

2) Galaxy Note 2 (with energy saving mode) - 40 fps, and game looks good too, but all game physycs(only physics) have -30% speed, and it looks like a slow-motion... nevertheless the 60sec of game timer on 60fps = 60sec of real time, and 60sec of game timer on 40fps = 60 sec of real time... Only objects with physics slow down...

How can I do that physyx speed will be normal (independently of FPS)?

You should read this article:

scirra.com/tutorials/67/delta-time-and-framerate-independence

Thank you! In RU-Community forum have no this article. It's very usiful!