Question:easy
A spherical object is falling under gravity through a viscous fluid. The sphere attains the terminal velocity when
A spherical object is falling under gravity through a viscous fluid. The sphere attains the terminal velocity when
Show Hint
At terminal velocity the net force is zero.
Updated On: Oct 1, 2026
- viscous force is zero.
- buoyant force is equal to force due to gravity
- viscous force plus force of gravity becomes equal to buoyant force.
- buoyant force plus viscous force becomes equal to force due to gravity.
Show Solution
The Correct Option is D
Solution and Explanation
Step 1: Newton first law:
Constant velocity means zero net force.
Step 2: Balance:
Upward: buoyant force $+$ viscous drag. Downward: weight. Setting these equal gives option (D).
Final Answer:
The correct statement is option (D). \[ \boxed{\text{Buoyant force} + \text{viscous force} = \text{weight}} \]
Constant velocity means zero net force.
Step 2: Balance:
Upward: buoyant force $+$ viscous drag. Downward: weight. Setting these equal gives option (D).
Final Answer:
The correct statement is option (D). \[ \boxed{\text{Buoyant force} + \text{viscous force} = \text{weight}} \]
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