alleryA fluid at rest pushes on a submerged object. The force is always:
ADirected downward
BNormal to the surface
CParallel to the surface
DDirected upward only
Answer & Solution
Correct answer: B. Normal to the surface
1. A sideways component would make the fluid flow.
2. A fluid at rest cannot flow.
3. So the force is normal to the surface.
_Source: syllabus Physics Part II, Chapter 10, Mechanical Properties of Fluids._
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