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Two particles have equal masses of 5.0 g...

Two particles have equal masses of 5.0 g each and opposite charges of `+4.0 xx10^(-5) C.` They are released from rest with a separation of 1.0 m between them. Find the speeds of the particles when the separation is reducced to 50 cm.

Text Solution

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Frictional electricity and Induction. Frictional electricity is the electricity produced by rubbing two suitable bodies and transfer of electrons from one body to other.
`PE_i+KE_i=PE_f+KE_f, (kq(-q))/x^2+0=(kq(-q))/(x//2)^2+1/2 mv^2+1/2 mv^2`
`-(kq^2)/x^2=-4(4kq^2)/x^2+mv^2, mv^2=(3kq^2)/x^2, V=sqrt((3kq^2)/(m x^2)`
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