A11-mm-diameter plastic sphere whose density is 1150 kg/m3 is dropped into water at 20°c. determine the terminal velocity of the sphere in water. the density and dynamic viscosity of water at 20°c are rho = 998 kg/m3 and μ = 1.002×10-3 kg/m⋅s, respectively. the drag coefficient for a sphere in laminar flow is cd = 0.5.

0.044 m/s

Explanation:

We are given that

Diameter of plastic sphere=11 mm=

Density of sphere=

T=

Density of water=

Viscosity of water=

Drag coefficient of a sphere in a laminar flow

We have to find the terminal velocity of the sphere in water.

Terminal velocity of sphere in water is given by

Substitute the values then we get

Hence, the terminal velocity of sphere in water=0.044 m/s

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )