Transcript Unit 5 2-D Forces

Review for:
Unit 5 – Forces
#1 All of the following are
forces except _____.
A.
B.
C.
D.
Gravity
Friction
Weight
Inertia
#2 When an object is in a
state of equilibrium…
A. The net force on the object is zero.
B. The object is at rest.
C. A and B could be true.
#3 The wider the string on a
hanging object the greater
the tension.
A. True
B. False
#4 When drawing force
diagrams, the big dot
usually represents ______.
A. The point of application
B. The object’s center of mass
C. Both A and B
#5 When drawing a force
diagram, the length of a
vector indicates _______.
A. Direction
B. Magnitude
C. The distance the object moves
#6 Friction…
A.
B.
C.
D.
Acts in the opposite direction of motion
Acts parallel to the surfaces in contact.
Is caused by interlocking irregularities
All of these
#7 As the angle of an incline
increases _____ increases.
A.
B.
C.
D.
FΘ
F//
FT
FW
#8 Centripetal force is
directed ________.
A.
B.
C.
D.
Toward the center of an object
Toward the center
Toward the center of a circle
Wherever Chuck Norris decides it should
be directed.
#9 When Schlueter was
wrecking various vehicles as a
teenager what caused the
wreck?
A. Stupidity
B. Schlueter being Schlueter
C. Lack of friction between the tires and the
ground
D. Chuck Norris doesn’t like Mr. Schlueter so
he made him wreck to teach him a lesson
#10 Isaac Newton discovered
gravity.
A. True
B. False
#11 In the following picture, the
same show rests on three
different inclined planes. What
remains constant?
A. Weight
B. Parallel component
C. Perpendicular component
#12 As the angle of incline
increases _____ decreases.
A. Weight
B. Parallel component
C. Perpendicular component
#13 According to our friction
lab, friction depends on all of
the following except …
A.
B.
C.
D.
Nature of the substances in contact
Area of contact between the surfaces
Smoothness of the surfaces
Normal force exerted on the object
#14 If the distance between two
objects is quadrupled, the force of
gravity between them is…
A.
B.
C.
D.
E.
F.
Multiplied by 4
Divided by 4
Multiplied by 8
Divided by 8
Multiplied by 16
Divided by 16
#15 If the mass and the velocity
are doubled, what happens to the
centripetal force?
A.
B.
C.
D.
E.
F.
Multiplied by 2
Divided by 2
Multiplied by 8
Divided by 8
Multiplied by 16
Divided by 16
#16 If the centripetal force is
doubled, and the velocity is
halved, what happens to the
radius?
A.
B.
C.
D.
E.
F.
Multiplied by 2
Divided by 2
Multiplied by 8
Divided by 8
Multiplied by 16
Divided by 16
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