- #1
krbs
- 51
- 3
Homework Statement
A ball with a mass of 3.0 x 10-4 kg hangs from a 15 cm long thread between two parallel plates. The thread is deflected to the side, as shown in the following diagram. The charge on the ball is +5.0 x 10-5 C.
a) Find the tension in the thread
b) Find the magnitude and direction of the electric field between the plates
Homework Equations
a) FTy =Fg
FTx = FE
b) ε = FE/q
The Attempt at a Solution
a) I solved for the horizontal and vertical components of tension (which I believe are equivalent, respectively, to the electric force and force of gravity, since the object is at equilibrium). I then found the resultant force of tension and the corresponding angle:
3.3 x 10-3 N [N 27° W]
b) 29 N/C [East]