Published by:
CGP EDU Academic Team
Published on: August 14, 2026
An aluminum sphere of mass 54 g and 
density is dropped into a tank of oil that has a density of 
. After a short time, the sphere falls with a constant terminal velocity. What is the magnitude of the viscous drag force on the sphere at this velocity? (Take 
)
Text Solution
Verified by ExpertsThe correct answer is:
B
The buoyant force is given by Archimedes' principle:
At terminal velocity, 
.
Therefore, 
.
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