My question on number 21.74 .Ater we set up theequestionTsinθ=q2 / 4πεo d2.why do we multiply it by mg. how can we dothat.
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My question on number 21.74 .Ater we set up theequestionTsinθ=q2 / 4πεo d2.why do we multiply it by mg. how can we dothat.