Homework Help: college physics

Posted by erin on Thursday, September 17, 2009 at 6:35pm.

There are four charges, each with a magnitude of 2.0uC. Two are postive and two are negative. The charges are fixed to the corners of a 3.0m square, one to each corner, in such a way that the net force on any charge is directed toward the center of the square. Find the magnitude of the net electrostatic force on any one of these charges.

college physics - bobpursley, Thursday, September 17, 2009 at 7:07pm
Draw the diagram. alternate the charges. With some thinking, you can see this is the only solution.

The two adjacent corners have an attractive net force, equal, so the resultant is toward the center:
Force= k2(cos45)2u*2u/3^2= 1.41k*2u*2u/9

Now the replelling force frm across the square is k2u*2u/(3sqrt2)^2= .5k(2u2u/9)

so the net force of attraction is...

(1.41-.5)k2u2u/9 N
college physics - sunil, Friday, October 22, 2010 at 11:37pm
dssax
college physics - sara, Tuesday, July 5, 2011 at 3:16pm
find the resultant force on the charge at the center

Answer this Question

Related Questions

Physics - Three point charges have equal magnitudes, two being positive and one...
Physics - Three point charges have equal magnitudes, two being positive and one...
Physics - Two point charges are 10.0 cm apart and have charges of 2.0 μ...
Physics - A)When point charges q1 = +1.5 ìC and q2 = +5.7 ìC are ...
Physics - Two point charges are fixed on the y axis: a negative point charge q1...
Physics - Two point charges are fixed on the y axis: a negative point charge q1...
Physics - Review Conceptual Example 7 as background for this problem. Two ...
Physics - 1. The problem statement, all variables and given/known data A point ...
physics - Two point charges are fixed on the y axis: a negative point charge q1...
physics - Two point charges are fixed on the y axis: a negative point charge q1...

For Further Reading

First Name:
School Subject:
Answer: