What is the mass of the sphere?

  • Thread starter dannie
  • Start date
  • #1
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Homework Statement


Two large , horizontal charged plates are separated by 0.050m. A small plstic sphere is stationary and suspended between them and is experiencing an electric force of 4.5x10^-15 N.
What is the mass of the sphere?

F=ma

My attempt.

F=4.5x10^-15N
a=9.8m/s^2
m=4.5x10^-15 N/9.8^2
=4.59x10^-16kg
 

Answers and Replies

  • #2
387
8
looks correct. But use 'g' instead of 'a' as sphere is at rest.
 
  • #3
collinsmark
Homework Helper
Gold Member
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Deleted post. I completely misread the problem. :blushing:
 

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