Recent content by Girn

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    Back EMF Equation and Calculating A/C Starter Current | Homework Example

    Homework Statement An A/C starter has a 12V supply & a back EMF of 6V. If the resistance is 0.1 ohms, calculate current during start-up & while in operation Homework Equations E=IR Not sure what else? Sorry I am stuck. The Attempt at a Solution Start up current E=IR 12V=I x .01 I = 120A...
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    Solving a Lever Problem: Need Help from Experts | Join Our Forum!

    I don't know where I am getting stuck, but I aint getting the answer. I am not sure what I am doing wrong.. I've tried so many different combinations.. obviously the basis for the formula is clockwise movements=counterclockwise movements, but I aint getting the answer.. and 900kN is not at the...
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    Solving a Lever Problem: Need Help from Experts | Join Our Forum!

    Please help me guys, I joined this forum just to post this... spent an hour or so trying to get the answers but I can't for the life of me! Homework Statement http://imageshack.us/a/img141/9812/20121012003953.th.jpg Homework Equations The Attempt at a Solution...