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Calculate the terminal speed for a bacterium in water. Use the expression for the drag force in the equation
F drag = −Crv .
Assume the bacterium has a mass m = 4 10−15 kg, a drag coefficient
C = 0.02 N • s/m2 and can be approximated as a sphere of radius r = 1 μm.
a. Draw a force diagram for the bacterium. Is it in equilibrium? Why?
b.Find the speed (size of the velocity) of the bacterium
c.How long does it take a bacterium to fall from the top of a lake of depth 2.5 m to the bottom if it falls at this speed?
F drag = −Crv .
Assume the bacterium has a mass m = 4 10−15 kg, a drag coefficient
C = 0.02 N • s/m2 and can be approximated as a sphere of radius r = 1 μm.
a. Draw a force diagram for the bacterium. Is it in equilibrium? Why?
b.Find the speed (size of the velocity) of the bacterium
c.How long does it take a bacterium to fall from the top of a lake of depth 2.5 m to the bottom if it falls at this speed?