MDCAT Physics MCQ #1818

A tiny sphere of radius 0.02 m moves through a liquid of viscosity 0.01 Ns/m² at 5 m/s. Calculate the viscous drag force acting on it.

MDCAT Physics MCQ #1818

  1. Question 1

    Q1. A tiny sphere of radius 0.02 m moves through a liquid of viscosity 0.01 Ns/m² at 5 m/s. Calculate the viscous drag force acting on it.

    • A) 0.019 N
    • B) 0.113 N
    • C) 0.003 N
    • D) 0.060 N

    Answer: 0.019 N

    Explanation: Stokes' law states F = 6πηrv. Substituting the given values (6 * 3.14 * 0.01 * 0.02 * 5) results in approximately 0.019 N.