Experiment from Ania&Andriej
To experiment we used lane and double cone.
First we measure the lane. Leftside has 4 centimeters and rightside has 6 centimeters.
We want to show you that the block can roll uphill.
It seems that the double cone moves uphill (against gravity) but in reality it moves accordingly to rules of physics. Because lanes are spread the center of weigt is shifted down during the rolling.