1. Force is a fundamental dimension.
a. True
b. False
2. Which of the following statements best describes what weight is?
a. Weight is the amount of mass something has.
b. Weight is resistance to acceleration.
c. Weight is a force due to gravity acting on a mass.
d. Weight describes how massive something is.
3. A single force can exist all by itself.
a. True
b. False
4. Forces always come in pairs, equal in magnitude and opposite in direction.
a. True
b. False
5. All forces result from direct contact.
a. True
b. False
6. If you drop your textbook it falls because the earth pulls it downward. At the same time, your
textbook pulls on the earth with a force that is
a. equal to the downward pull on the textbook and in the same direction.
b. equal to the downward pull on the textbook but in the opposite direction.
c. immeasurably small.
d. zero.
7. A satellite orbits the earth instead of flying off into space because
a. rocket thrusters continuously push it towards the earth.
b. solar reflectors continuously push it towards the earth.
c. wind sails continuously push it towards the earth.
d. gravity continuously pulls it towards the earth.
8. Which of the following is the SI unit for force?
a. Pounds
b. Newtons
c. Grams
d. Kilograms
9. The physical quantity of force is a vector quantity (has direction).
a. True
b. False
10. The physical quantity of force has
a. magnitude only.
b. direction only
c. both magnitude and direction
d. neither magnitude nor direction
11. Unlike many other vector quantities, which are defined by their magnitude and direction,
force is also defined by its
a. color
b. duration
c. length
d. point of application
12. Forces tend to do what to objects upon which they act?
a. move them
b. rotate them
c. elongate, shorten them, or bent them
d. all of the above
13. A force that will accelerate 1 kilogram of mass at a rate of
2
1s
m
is known as one
a. pound.
b. Newton.
c. ton.
d. metric ton.
14. One Newton is equal to
a.
2
1s
mkg
b.
s
mkg
1
c.
2
2
1s
mkg
d.
2
2
1s
mkg
15. A force that will accelerate 1 slug of mass at a rate of
2
1s
ft
is known as a
a. pound force.
b. Newton.
c. ton.
d. metric ton.
16. Over the elastic range, the deformation of a spring is directly proportional to
a. the amount of stretch.
b. the amount of compression.
c. the applied force.
d. the spring constant.
17. Over the elastic range, the deformation of a spring is inversely proportional to
a. the amount of stretch.
b. the amount of compression.
c. the applied force.
d. the spring constant.
18. The value of the spring constant depends on
a. the type of material used to make the spring.
Test Bank Engineering Fundamentals, 5th ed. Chapter 10
b. the shape and winding of the spring.
c. All of the above
d. None of the above, that’s why it’s called a “constant.”
19. A force of 20 N causes a spring to stretch 5 cm. What is the spring constant?
a. 1 N/m
b. 2 N/m
c. 20 N/m
d. 400 N/m
20. If you push sideways gently on your textbook and it doesn’t move, it is most likely because
a. the book’s mass is large enough to resist your push.
b. your push is too small to overcome the book’s inertia.
c. friction is pushing on the book in the opposite direction as your push.
d. none of the above
21. What does
stand for in the following equation?
NF
=
max
a. coefficient of friction
b. coefficient of restitution
c. spring constant
d. viscosity
22. What does
N
stand for in the following equation?
NF
=
max
a. Newtons
b. Normal force
c. Natural force
d. Natural frequency
Test Bank Engineering Fundamentals, 5th ed. Chapter 10
23. The property of a fluid that quantifies fluid friction is called
a. coefficient of friction
b. coefficient of restitution
c. density
d. viscosity
24. The quantity that represents a measure of how easily a given fluid can flow is known as
a. density
b. specific weight
c. viscosity
d. none of the above
25. In general, the viscosity of gases increases with increasing temperature.
a. True
b. False
26. In general, the viscosity of liquids increases with increasing temperature.
a. True
b. False
27. If an object is at rest and there are no unbalanced forces acting on it, the object will
a. speed up.
b. slow down.
c. remain at rest.
d. none of the above
Test Bank Engineering Fundamentals, 5th ed. Chapter 10
28. If an object is moving and there are no unbalanced forces acting on it, the object will
a. speed up.
b. slow down.
c. continue moving at constant velocity.
d. none of the above
29. If you push on your textbook so that it slides across the table at a constant velocity,
a. there must not be any forces acting on the book, otherwise it would accelerate.
b. all of the forces acting on the book must be balanced.
c. the book must be changing direction.
d. none of the above
30. If you drop your textbook, while it is falling it speeds up, therefore
a. there are no forces acting on the book.
b. all of the forces acting on the book are balanced.
c. the forces acting on the book are unbalanced.
d. none of the above
31. Objects at rest tend to remain at rest and objects in motion tend to remain in motion, unless
acted upon by an unbalanced external force. This is a basic description of
a. Newton’s 1st Law
b. Newton’s 2nd Law
c. Newton’s 3rd Law
d. Newton’s 4th Law
32. In his second law, Newton observed that force and acceleration are
a. inversely proportional
b. directly proportional
c. all of the above
d. none of the above
33. The acceleration of an object is directly proportional to the force that is causing the
acceleration. This is a basic description of
a. Newton’s 1st Law
b. Newton’s 2nd Law
c. Newton’s 3rd Law
d. Newton’s 4th Law
34. When a force causes an object to accelerate, the force and the resulting acceleration have
a. the same direction.
b. different directions.
c. no relationship between their directions.
d. none of the above
35. If you push on the wall with a force of 10 pounds the wall pushes back on you with a force of
10 pounds. This is a basic description of
a. Newton’s 1st Law
b. Newton’s 2nd Law
c. Newton’s 3rd Law
d. None of the above
36. The weight of an object is the force that is exerted on the mass of the object by the earth’s
gravity.
a. True
b. False
37. Weight and mass are essentially the same thing.
a. True
b. False
38. What does G stand for in the following equation?
2
21
r
mGm
F=
a. Gravity
b. Universal gravitational constant
c. Gallons
d. Weight
39. What does r stand for in the following equation?
2
21
r
mGm
F=
a. Radius of the earth
b. Universal gravitational constant
c. Resistance
d. Center-to-center distance between objects
40. What does F stand for in the following equation?
2
21
r
mGm
F=
a. Gravitational force
b. Friction
c. Viscous friction
d. Weight
41. What does W stand for in the following equation?
mgW=
a. Weight
b. Work
c. Watts
d. none of the above
42. What does g stand for in the following equation?
mgW=
a. Weight
b. Gallons
c. Acceleration due to gravity
d. none of the above
43. If a small sports car collides head-on with a massive truck, which vehicle experiences the
greater impact force? Which vehicle experiences the greater acceleration due to the impact?
44. A tow truck exerts a force of
N2000
on a car, causing it to accelerate at
2
4s
m
. What is the
mass of the car?
a.
kg500
b.
kg750
c.
kg1000
d.
kg1500
e. None of the above
45. A tow truck exerts a force of
lb450
on a car, causing it to accelerate at
2
10 s
ft
. What is the
mass of the car?
a. 45 slugs
b. 45 lbm
c. 45 kg
d. None of the above
46. Identify the force that accelerates a car:
a. the car pushing on the road
b. the road pushing on the car
c. the engine pushing on the wheels
d. the wheels pushing on the engine
47. Pressure is a fundamental dimension.
a. True
b. False
48. What is the SI unit for pressure?
a.
Pa
b.
MPa
c.
psi
d.
Hgmm−
49. A “suction cup” sticks to the wall because it is
a. pulled to the wall by vacuum
b. pushed to the wall by the atmospheric pressure
c. both of these
d. none of the above
50. Calculate the torque produced by a 50 N perpendicular force at the end of a 20 cm-long
wrench.
a. 10 N.m
b. 1000 N.m
c. 2.5 N/m
d. 0.4 cm/N
51. A “teeter–totter” (or “see–saw” if you prefer) has a 50 lb child sitting at one end, 10 ft from
the center pivot point (fulcrum). How far from the center point should a 125 lb adult sit in order
to balance the teeter-totter?
a. 2.5 ft
b. 4 ft
c. 6.5 ft
d. 10 ft
52. The absolute pressure is related to the gauge pressure according to
absolute gauge atmospheric
P = P + P
a. True
b. False
53. Geometric properties of an object such as its length, area, and first and second moment of
area do not play significant roles in the way the object responds to a force.
a. True
b. False
54. Stress provides a measure of the intensity of internal forces acting over an area.
a. True
b. False
55. The modulus of elasticity, or Young’s modulus, is computed by calculating the slope of a
stress-strain diagram over the elastic region.
a. True
b. False
56. The modulus of elasticity is a measure of how easily a material will stretch when pulled
(subject to a tensile force) or how well the material will shorten when pushed (subject to a
compressive force).
a. True
b. False
Test Bank Engineering Fundamentals, 5th ed. Chapter 10
57. A ductile material shows little or no permanent deformation before it ruptures.
a. True
b. False
58. A brittle material, when subjected to a tensile load, will go through significant permanent
deformation before it breaks.
a. True
b. False
59. The value of fluid bulk modulus shows how easily the volume of the fluid can be reduced
when the pressure acting on it is increased.
a. True
b. False
60. The modulus of rigidity is a measure of how easily a material can be twisted or sheared.
a. True
b. False
61. Linear impulse represents the net effect of a force acting over a period of time and brings
about a change in the linear momentum of the object.
a. True
b. False
62. Mechanics deals with the study of behavior of objects or structural members when subjected to
forces.
Test Bank Engineering Fundamentals, 5th ed. Chapter 10
a. True
b. False