The siphon shown is used to transfer liquid from a higher level to a lower level. If the fluid is drawn up and is continuous through the tube, determine the velocity of flow of gasoline if the vertical distance from the liquid surface to the outlet is 1.0 m.
a.
1.1 m/s
b.
2.2 m/s
c.
4.4 m/s
d.
9.8 m/s
e.
6.5 m/s
[Ques. 2] The free-body diagram below represents a 1500-kg car sitting on a 3000-kg bridge supported at its far ends. The car's position is three quarters of the length
L from the left end of the bridge. Identify the one error in the torque equation below:
a.
never produces a torque on the bridge no matter where the axis of rotation is placed.
b.
never produces a torque on the bridge no matter where the axis of rotation is placed.
c.
cannot produce a torque on the bridge no matter where the axis of rotation is taken since it is at the center of the bridge.
d.
Because the perpendicular distance to
from the left end of the bridge is 0,
F1L should be 0.
e.
Because the perpendicular distance to
from the right end of the bridge is 0,
F2L should be 0.
[Ques. 3] Sebastian has drawn a free-body diagram for a ladder of mass
m leaning against a frictionless wall. His diagram is shown below. What is his error?
a.
is in the wrong direction.
b.
should be directed upwards, not down.
c.
should be perpendicular to the wall, not parallel to it.
d.
should be down into the floor for
to have the given direction.
e.
is correct, but there should also be a force perpendicular to the wall.
[Ques. 4] An object of mass m is suspended by two coplanar wires, as shown below. The tension in each wire has a magnitude given by
a.
.
b.
.
c.
.
d.
mg.
e.
.
[Ques. 5] Pairs of forces of equal magnitude act on identical cylinders as shown in the figures. In which example is the cylinder in translational and rotational equilibrium?
a.
b.
c.
d.
e.
[Ques. 6] One of the curators at the art museum is tilting a large cylinder backward. At what angle will the cylinder of height h and radius r be in unstable equilibrium?
a.
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