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Forces on an electron: find the work during displacement

  1. Oct 25, 2009 #1
    1. The problem statement
    Consider the electron and the force on the electron is F=Cxj, where C is a positive constant. F, xj are vector?

    2. Relevant equations

    Consider the electron and the force on the electron is F=Cxj, where C is a positive constant. (F, xj are vectors)

    a) The electron travels from the point (0, 0) to the point ( L , L ) along the straight line from (0, 0) to (0,L) and then along the straight line from (0,L) to ( L, L). What is the work done by the force F during this displacement?

    b.)The electron travels from the point (0, 0) to the point ( L, L) along the straight line from (0, 0) to (L , 0) and then along the straight line from (L , 0) to (L ,L). What is the work done by the force F during this displacement?

    c.)The electron travels from the point (0, 0) to the point (L ,L ) along the straight line from (0, 0) to (L ,L ). What is the work done by the force F during this displacement?

    I do not recall doing a problem like this in class. Can anyone help me out?
     
  2. jcsd
  3. Oct 26, 2009 #2

    tiny-tim

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    Homework Helper

    ola pedro_infante! :wink:

    work done = force "dot" displacement

    Does that help? :smile:
     
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