Two identical simple pendulums, A and B, are suspended from the same point. The bobs are given positive charges, with A having more charge than B. They diverge and reach equilibrium, with A and B making angles θ1 and θ2 with the vertical respectively. Which of the following is correct?
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a
θ1>θ2
b
θ1<θ2
c
θ1=θ2
d
The tension in A is greater than that in B
answer is C.
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Detailed Solution
Coulomb forces Fe between unequal charges are equal.For equilibrium, For A : tanθ1=Femg For B : tanθ2=Femg Comparing, we get tanθ1=tanθ2 ⇒θ1=θ2