Drag and lift forces experienced by an object placed in a fluid stream are due to
Answers
The instantaneous velocity of a liquid particle is
always tangent to the streamline.
The rate of flow may be represented by
the density of streamlines, or the number of streamlines passing through a
surface of unit area perpendicular to the direction of flow. Thus the streamlines
will be close together where the liquid is moving rapidly and farther
apart in regions of the pipe where the liquid is moving slowly. Similar
conventions were used to represent the direction and magnitude of the
gravitational field intensity.
Since the liquid is incompressible and there are no places in the pipe
where the liquid can be stored, the volume of liquid which flows through
any plane perpendicular to the streamlines in any interval of time must be
the same everywhere in the pipe.
Explanation:
Which of the following does not affect the drag and lift forces experienced by an object placed in a fluid stream?