A small plastic ball of mass $7.62 imes 10^{-3}$ kg and charge $+0.142 mu C$ is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of $30.0^circ$ with respect to the vertical. The area of each plate is $0.01734 ext{ m}^2$. What is the magnitude of the charge on each plate?
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62 x 10^-3 kg Charge on the ball, Q = 0.142 C Angle with respect to vertical, θ = 30° Area of each plate, A = 0.01734 m^2 Show more…
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