Consider two solid spheres and

PHYSICS · Subjective · CBSE · Physics · Mechanical Properties of Fluids · Mechanical Properties of Fluids

Problem

Consider two solid spheres

P

and

Q

, each of density

8\ \text{g cm}^{-3}

and diameters

1\ \text{cm}

and

0.5\ \text{cm}

, respectively. Sphere

P

is dropped into a liquid of density

0.8\ \text{g cm}^{-3}

and viscosity

\eta_P=3

poise. Sphere

Q

is dropped into a liquid of density

1.6\ \text{g cm}^{-3}

and viscosity

\eta_Q=2

poise. Find the ratio of the terminal velocities of

P

and

Q