- #1

- 15

- 0

**Magnetism problem for General Physics 2!**

## Homework Statement

Suppose the rod in the figure has mass m= 0.40kg and length 20cm and the current through it is I= 40A .

(Intro 1 figure)

If the coefficient of static friction is us= 0.55, determine the minimum magnetic field (not necessarily vertical) that will just cause the rod to slide. Give the magnitude of B.

## Homework Equations

I am not really sure what equations I am supposed to use for this problem..I don't really know how to get started...can someone help me please!

I think F=ma...using the static coeff. us=.55

Maybe..F=qv x B

or F = qvB sin (theta)