Two small plastic balls hang from threads of negligible mass. Each ball has a ma

Question

Two small plastic balls hang from threads of negligible mass. Each ball has a mass of 0.190g and a charge of magnitude q. The balls are attracted to each other, and the threads attached to the balls make an angle of 20.0 ? with the vertical, as shown in the figure.(Figure 1). What is the magnitude of the charge on the balls in nC?

Magnitude of electric force acting on each ball= 6.78*10^-4 N

Tension in each of the threads= 1.98*10^-3 N

Two small plastic balls hang from threads of negligible mass. Each ball has a mass of 0.190g and a charge of magnitude q. The balls are attracted to each other, and the threads attached to the balls make an angle of 20.0 ? with the vertical, as shown in the figure.(Figure 1). What is the magnitude of the charge on the balls in nC? Magnitude of electric force acting on each ball= 6.78*10^-4 N Tension in each of the threads= 1.98*10^-3 N

Explanation / Answer

A. Fe = Fg = mgtan? = 0.00019*9.81*tan(20 d) = 6.3469864E-04 N

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