You could put ice, put it on wheels!
        
             
        
        
        
Answer:
 Flemmings' left hand rule  and Downward direction 
Explanation:
The person could able to determine the path of force by applying the left-hand rule of Fleming. 
Via holding the thumb the forefinger and second finger at right angles for one other 
The left-hand rule is applied in the electric motors
On the other hand, the right-hand rule is applied for electric generators. 
So different hands are used for the different thing as there is a difference between the cause and effect
Therefore in this case there is a left hand rule used and the direction is downward 
 
        
             
        
        
        
Friction is Produced there.....