JEE Main 2008 Physics question
A spherical solid ball of volume is made of a material of density . It is falling through a liquid of density . Assume that the liquid applies a viscous force on the ball that is proportional to the square of its speed v, i.e., . The terminal speed of the ball is
Answer: (1)
Solution
At terminal speed: weight = buoyancy + drag: kv_t^2v_t$ =
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