Two 1.5 kg masses are 1.5 m apart (center to center) on a frictionless table. Each has + 9.1 μC of charge.
What is the magnitude of the electric force on one of the masses?
What is the initial acceleration of the mass if it is released and allowed to move?
Solution)
We know,
a) F = k q1q2 / r^2
= 9 x 10^9 * (9.1 x 10^-6)^2 / 1.5^2
= 0.33124 N
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b) a = F / m = 0.33124 / 1.5 = 0.2208 m/s^2
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