# Flemings Left Hand Rule for Motors?

Discussion in 'Homework Help' started by stinky111, Jun 25, 2011.

1. ### stinky111 Thread Starter Member

Apr 7, 2011
39
1
Hi Guys, Im working on these revision questions, i carnt find alot in my notes about solving them, All I remember is holding my thumb & forefinger on my left hand either up or Down to solve I think? Any help appreciated... Thx.

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Apr 26, 2005
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3. ### stinky111 Thread Starter Member

Apr 7, 2011
39
1
That pic is indeed what I was describing, but I was unsure how to apply this left hand rule to solve my attached questions.
ie would the (thumb up, motion) move the N or S pole etc, this is what confuses me.. thx
Can anyone please offer anymore guidance ??

4. ### Raghav102 New Member

Sep 27, 2010
2
0
can you be more specific??
what is the area you are getting confused??

5. ### JoeJester AAC Fanatic!

Apr 26, 2005
3,401
1,218
Did you go and read that website? I thought it explained it well.

6. ### steveb Senior Member

Jul 3, 2008
2,433
469
I don't like the lable of "motion". This should be called "force" or "acceleration" because a motor can be moving in the opposite direction as the force. Some people may associate motion with acceleration, while others may think it is velocity. The two are not the same.

I find this rule hard to remember. I use the right hand cross product rule and just remember the Lorentz force formula F=I x B where F, I and B are the vectors representing force, current and field respectively.