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Two small balls having equal poistive ch...

Two small balls having equal poistive charges Q( coulomb) on each are suspended by two insulating strings of equal length L(metre) from a hook fixed to a stand. The whole set up is taken in a satellite into space where there is no gravity (state of weightlessness). The angle between the two strings is...............and the tenison in each string is...................newtons.

Text Solution

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In a satellite, there is condition of weightlessness.
Therefore,`mg = 0`. On account of electrostatic force of repulsion between the balls, the strings would become horizontal. Therefore,angle between the strings `= 180^(@)`.
Also, tension in each string = force of repulsion
`T = (1)/(4pi in_(0)) (q^(2))/((2l)^(2)) N`
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