Recent content by jdub88

  1. J

    Find the Current of a circuit, all you are given is P= .4W

    Homework Statement Find the Current of a circuit, all you are given is P= .4W Homework Equations The Attempt at a Solution Not sure what to do? P=VI .4=VI Am i missing some relevant info here? Or can you find Current if you are just given P?
  2. J

    How do you find F without the second Mass?

    I did draw a FBD, which helps but I can't figure out a formula to use..I kept thinking F=m*a. So without m, how could I find the force acting on the lever. So the distances how nothing to do with the question? Therfore F= 0. I have not studied torques, but I will look up the concept. Thanks
  3. J

    How do you find F without the second Mass?

    I have a physics test next week for a job interview, one of the Questions I'm not sure how to answer or the formula to use: There is a beam with a 70kg mass at the left end. The fulcum point is 4m to the right, then it is 2.5m to the end of the beam. The question asks me to find F at the...