Three charges are at the corners of an isosceles triangle as shown in the figure

Question

Three charges are at the corners of an isosceles triangle as shown in the figure (Figure 1) . The +q1 = 5.25 microC and -q1 = 5.25 microC charges form a dipole. PT A: Find the magnitude and direction of the net force that the q2 = 9.50 micro C charge exerts on the dipole. PT B: For an axis perpendicular to the line connecting the two charges of the dipole at its midpoint and perpendicular to the plane of the paper, find the magnitude and direction of the torque exerted on the dipole by the q2= 9.50 microC charge.

Explanation / Answer

Part A:

For on q1 by -q2 :

F = 9*10^9*5.25*9.5*10^-12/0.02^2

=1122.1875 N

For on -q1 by -q2 :

F = 9*10^9*5.25*9.5*10^-12/0.02^2

=1122.1875 N

F(net) = 2*1122.1875*1.5/2

=1683.28125 N

Direction is from +q1 to -q1.

Part B:

Torque = 1122.1875*0.03*1.323/2

=22.268 N-m

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.