# Triangular loop problem

1. Apr 9, 2014

### sfgoat

This is a question I got wrong on a test and would like to see if I can get someone to show me how to do it properly. Snapped a pic . See below please. Thanks.

File size:
14 KB
Views:
75
File size:
32.9 KB
Views:
76
2. Apr 9, 2014

### BruceW

You've written $\sin(\phi )=1$ at the top. And that is true for the ac segment. But is it true for the other two segments?

3. Apr 10, 2014

### sfgoat

So would the force on the bc segment be zero since the sin(pi or 2pi) would be zero

4. Apr 10, 2014

### BruceW

yep, you got it. keep going :)