Questions
A small steel ball of radius r experiences a viscous force F when it is falling in a jar of glycerine with terminal velocity v. The viscons force experienced by a steel ball of radius r/2 falling in glycerine with terminal velocity v/2 is
detailed solution
Correct option is C
F=6πηrv F′=6πηr2×v2=14×6πηrv=F4So the correct choice is (c).Similar Questions
When a body falls in air, the resistance of air depends to a great extent on the shape of the body, 3 different shapes are given. Identify the combination of air resistances which truly represents the physical situation. (The cross sectional areas are the same).
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