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A charged particle of mass 5g and charge...

A charged particle of mass 5g and charge `1mu C` is in limiting equilibrium on a horizontal table when a horizontal electric field of `10^(4)NC^(-1)` is applied. Find the coefficient of friction between the table and the particle. (Take `g= 10 ms^(-2)`)

Text Solution

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Given, `m=5 g= 5 xx 10^(-3)kg, q=1mu C= 1 xx 10^(-6)C`,
`E= 10^(4)NC^(-1), mu_(s)=`?
`therefore mu_(s) mg= Eq`
`rArr` Coefficient of friction, `mu_(s)= (Eq)/(mg)= (10^(4) xx 1 xx 10^(-6))/(5 xx 10^(-3) xx 10)= 0.2`
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