Two spherical bobs , each having mass m and charge q are suspended by strings pf length l each .They are suspended from point o,where a third charge q is located. find charge q ,if in equilibrium position,the angle between the strings is theta
Answer (1)
6th Feb, 2021
Hello candidate,
Here in this particular question, to achieve a state of equilibrium we have to balance the electrostatic forces of attraction with the gravitational forces acting due to the weight of the bobs.
Now,2 kq1.q2/l^2 = 2mgcos(theta/2), where we assume that q1 is the known charge whereas q2 is the unknown charge which we have to find about. Hence q2= mgcos(theta/2)/ kq1.
Hope this information was helpful for you!!
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