Fluid MechanicsMedium
Question
A piece of cork starts from rest at the bottom of a lake and floats up, Its velocity v is plotted against time t. Which of the following best represents the resulting curve -
Options
A.
B.
C.
D.
Solution
As the cork moves, up, the force due to buoyancy remains constant. As its speed in crease, retarding force due to viscosity increase. The acceleration is variable, and hence the relation between velocity and time is not linear.
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