JEE Mains · Physics · STD 11 - Fluid mechanics
- JEE Mains 2022
- Medium
- MCQ
The velocity of a small ball of mass ' \(m\) ' and density \(d _{1}\), when dropped in a container filled with glycerine, becomes constant after some time. If the density of glycerine is \(d _{2}\), then the viscous force acting on the ball, will be
Pick an option to check your answer.
Answer & Solution
Correct Answer
(B) \(m g\left(1-\frac{d_{2}}{d_{1}}\right)\)
Step-by-step Solution
Detailed explanation
\(F_{V}=m g-F_{B}\)
\(=m g-\left(\frac{m}{d_{1}} \times d_{2}\right) g\)
\(=m g\left(1-\frac{d_{2}}{d_{1}}\right)\)
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