1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Mass changed if q is produced by adding to electrons mass

  1. Sep 2, 2015 #1
    Can someone walk me through calculating the final step in this problem.

    Problem statement:

    If the charge q is produced by adding electrons to the mass, by how much will the mass be changed?

    It was calculated that the charge q is 2.374 * 10^-7 C which is correct and I know that we need to balance (m + m')g = ?

    If I were in different units I would balance this with q * e/(2 * epsilon_0)
    I just don't know what I'm supposed to be balancing this with to solve for m'

    The mass is .0227 kg and the charge is suspended .0477 m above a nonconducting plate.
  2. jcsd
  3. Sep 2, 2015 #2
    Nevermind I figured it out

    m = [(2.374 * 10^-7)/(1.6 * 10^-19)] * (9.11 * 10^-31)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted