Question

At very low speeds, the resistance to motion offered by a liquid or gas is nearly
proportional to velocity; such a viscous drag force opposes the motion and can be writ-
ten fviscous = −bv, where the constant of proportionality is known as the viscous drag
coefficient.
A tiny spherical metal particle of mass 6 × 10−6 g (neglect buoyancy ef-
fects) falling though oil has a drag coefficient b = 3 × 105 kg/s. What is its terminal
speed?

Answer 1