Two charged spheres are connected by an insulated string and separated by 3 m on

Question

Two charged spheres are connected by an insulated string and separated by 3m on a frictionless horizontal surface. The spheres have the same mass 2kg. The charges on the spheres are 2 nC and 2nC.

(a) Calculate the tension in the string.

(b) Calculate the electric field at a point midway along a line between the charges

(c) What direction do the electric field lines point for each charge.

The masses of the objects are m1 = 2 kg and m2 = 3 kg. (Electric field vector, E, points away from + charge and toward

Explanation / Answer

a) Tension in the string = repusive force between sphere

= k*q^2/r^2

= 9*10^9*(2*10^-9)^2/3^2

= 4*10^-9 N

b) zero

c) radially outward

d) a = F/m

4*10^-9/2

= 2*10^-9 m/s^2

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

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