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Soaring Crane
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Two small nonconducting spheres have a total charge of 80 microC. When place 1.06 m apart, the force exerts on the other is 12 N and is repulsive. What is the charge of each. What if the force were attractive?
Given: k, F = 12 N if repulsive but F = -12 N if attractive, Q1 + Q2 = 8 x 10^-5 C, r = 1.06 m
Using Coulomb’s Law, isolate Q1Q2 .
Q1Q2 = 1.498 x 10^-9 C?
Then I thought I would use substitution for Q1 + Q2 = 8 x 10^-5 C and Q1Q2 = 1.498 x 10^-9 C.
But now I get a huge quadratic equation. Is this the correct method??
Thanks.
Given: k, F = 12 N if repulsive but F = -12 N if attractive, Q1 + Q2 = 8 x 10^-5 C, r = 1.06 m
Using Coulomb’s Law, isolate Q1Q2 .
Q1Q2 = 1.498 x 10^-9 C?
Then I thought I would use substitution for Q1 + Q2 = 8 x 10^-5 C and Q1Q2 = 1.498 x 10^-9 C.
But now I get a huge quadratic equation. Is this the correct method??
Thanks.
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