CHOOSE CORRECT ONE QUESTION 1 In a static fluid, the resultant hydrodynamic pres
ID: 1522835 • Letter: C
Question
CHOOSE CORRECT ONE
QUESTION 1
In a static fluid, the resultant hydrodynamic pressure force
a.
always acts through the uppermost corner of the object.
b.
does not necessarily act through the centroid of a submerged object.
c.
always acts through a point that is at the mid-height in the object.
d.
always acts through the centroid of a submerged object.
QUESTION 2
The density of liquids may vary
indeterminate.
have both normal and tangent components to the surface on which it acts.
tangent to the surface on which it acts.
perpendicular to the surface on which it acts.
a function of gage pressure.
equal to the weight of liquid displaced by the object.
independent of the liquid's properties.
the same constant value for all objects and liquids.
In a static fluid, the direction of the resultant hydrodynamic force will always be
at high viscosities.
only when a fluid flows.
never.
at high pressures.
In a static fluid, the buoyancy force of a liquid on a completely submerged object is
a.indeterminate.
b.have both normal and tangent components to the surface on which it acts.
c.tangent to the surface on which it acts.
d.perpendicular to the surface on which it acts.
Explanation / Answer
In a static fluid, the resultant hydrodynamic pressure force- d. always acts through the centroid of a submerged object. The density of liquids may vary- at high viscosities. In a static fluid, the direction of the resultant hydrodynamic force will always be- d. perpendicular to the surface on which it acts. In a static fluid, the buoyancy force of a liquid on a completely submerged object is- b. equal to the weight of liquid displaced by the object.