Question

An oil drop of mass m falls through a medium that offers a viscous drag force F. If the velocity of the drop is constant it means that

• A. F > mg
• B. F < mg
• C. $F=mg$
• D. None of the above

Answer 1

Answer: (C)

$F=mg$

If 'v' becomes constant, i.e., acceleration is zero and hence net force on it is zero.