JEE Main 2022 Physics question
The velocity of a small ball of mass 0.3 g and density 8 g/cc when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is 1.3 g/cc, then the value of viscous force acting on the ball will be N, the value of x is . [use g = 10 ]
Answer: 25
Solution
At constant (terminal) velocity the viscous force balances the net weight: = mg − = , with 10^{-3}$/(8
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