- #1
logearav
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Homework Statement
Revered members,
Kindly see my attachment.
Homework Equations
The Attempt at a Solution
When the charged oil drop is balanced, electric force = weight of oil drop.
Eq = mg
Eq = F + U, where F is the viscous force and U is the upthrust force. Since the oil drop attains terminal velocity mg = F + U.
I know viscous force always act upwards. But i can't figure out the direction of viscous force when oil drop is balanced. Please help, members