@mfb .
Are you saying the friction acts in the same direction of wheel motion? I did not fully understand your comment. Please clarify. sorry for the trouble.
I am 100% that gravity acts downwards. But don't understand friction direction?
Also, there is a magnet attached to the robot that is...
Homework Statement
The robot crawler has a magnet attached to it. The idea is to get the crawler up the wall.
What is the magnetic force required to hold a object (in this case) a robot crawler with an attached Magnet?
Is more magnetic force required to hold the crawler while it goes up the...