A spherical object is falling under gravity through a viscous fluid. The sphere attains the terminal velocity when (a) viscous force is zero. (b) buoyant force is equal to force due to gravity (c) viscous force plus force of gravity becomes equal to buoyant force. (d) buoyant force plus viscous force becomes equal to force due to gravity.

Answer: (d). Gravity acts down; buoyancy and viscous force act up on a falling sphere. Terminal velocity means zero net force: FB + Fv = mg. So the answer is (d) buoyant force plus viscous force equals force due to gravity.

A spherical object is falling under gravity through a viscous fluid… | MHT CET 2026 (18 Apr, Shift 1)

Q1MHT CET 2026 · 18 APR · SHIFT 1Easy

Terminal Velocity

A spherical object is falling under gravity through a viscous fluid. The sphere attains the terminal velocity when

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Answer: (d)

Gravity acts down; buoyancy and viscous force act up on a falling sphere.
Terminal velocity means zero net force: $F_B + F_v = mg$ .
So the answer is (d) buoyant force plus viscous force equals force due to gravity.

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