- #1
whatisphysics
- 30
- 0
Homework Statement
What are the magnitude and direction of the electric field that will balance the weight of an
a)electron b)proton?
Homework Equations
W=mg
E=F/q
The Attempt at a Solution
This is what I did:
W=mg=F
so E=mg/q
My only question is, since W is downward, when I do my calculations, do I have to make it:
W=-mg=F
or do I simply just put it as W=+mg
If yes, why do i put it as +, or why do i leave it as negative, this is what I'm a bit confused about.
Thanks in advance!