What is the size and direction of the force on each segment in this gif?

[krot]

i need to figure out the size and direction of the force on each segment

http://i32.tinypic.com/1075g8g.gif

in cd segment there is a 45 degree between the electricity and magnetic field
so i need to have size 40*sin 45

why they write only 40
??

 

[krot]

am i correct?

 

[tiny-tim]

Welcome to PF!

Hi krot! Welcome to PF!

Your picture shows a cube with an electric circuit along adjacent j and k edges, and returning along ij and ik face-diagonals, with a uniform magnetic field in the j direction.

in cd segment there is a 45 degree between the electricity and magnetic field
so i need to have size 40*sin 45

why they write only 40
??

you would only need 40sin45º if the diagonal was 40 …

it isn't!

 

[Evo]

krot's been caught. He's a previously banned member.