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M602 Review Questions
For All Units
1. What is the opposite of
expansion?
Contraction.
2. Who defined the laws of
gravity in detail?
Sir Isaac Newton.
3. How is force measured?
By weight.
4. In the following sentence,
what word(s) is being defined?
Torque, a twisting or turning, is
demonstrated when you place
your hand at the end of a
wrench to tighten or loosen a
nut.
Torque. The commas signal
a definition.
5. How do we make our
cars run more efficiently?
Changing the oil, etc.
6. How many laws of
motion did Newton have?
Three.
7. What is the unit of power
commonly used in
engineering?
Horsepower.
8. What are three types of
friction?
Static, sliding, and rolling.
9. What does friction allow
us to do?
Walk, move, stop.
10. What is the origin of
horsepower?
James Watt wanted to
compare the power of an
engine to that of a horse.
11. What are the three
states of matter?
Solid, liquid, and gas.
12. What are two types of
scales?
Spring and balance.
13. Why was the balance
scale invented?
Because of the lack of
accuracy of the spring scale.
14. What kind of motion
always has constant speed?
Uniform motion.
15. In the following sentence
what word is being defined
and what signals the
definition.
Energy is defined as the
ability to do work.
Energy; is defined as
16. What is the difference
between speed and velocity?
Speed refers to how fast on
object is moving or how far the
object will travel in a specific
time.
Velocity denotes both the
speed of an object and the
direction the object moves.
17. Give an example of
potential energy and kinetic
energy.
Potential energy exists within
a rock resting on the edge of a
cliff or water behind a dam.
Kinetic energy exists when the
rock is pushed off the cliff or
the gate of the dam is opened
causing the water to flow.
18. What appears to be the
most important type of force?
Gravitational Force.
19. Which of the two basic
scales uses a fulcrum point?
The balanced scale.
20. What are three forms of
energy?
Electrical, Mechanical,
Chemical, Radiant, and
Nuclear.
21. What is the equation for
work in the USA?
Work = Force x Distance.
Force is expressed in pounds
and distance is expressed in
feet.
22. Why is the first hill of the
roller coaster ride the highest?
Because the cars are pulled
up the first hill by machinery,
but continue by gravitational
force.
23. What happens to a body
when heat is applied to it?
Heat causes the expansion
of a body.
24. What does an atom
contain?
Neutrons, protons, and
electrons.
25. What is the cause in the
following sentence.
Friction leads to wear.
Friction.
26. What is the effect in the
following sentence?
The object was moved, so
work was accomplished.
Work was accomplished.
27. On how many sides of a
container does a confined gas
apply pressure?
All sides of the container.
28. What is the property that
neither liquids nor solids
have?
The ability to expand
indefinitely.
29. What is the unit of
measurement for force in the
USA?
Pounds.
30. What is the unit of
measurement for distance in
the United States?
Feet.
31. What is the measurement
for work in the USA?
Foot-pounds.
32. What is the formula for
acceleration?
Acceleration = change in
motion/ time
33. What is the formula for
velocity?
Velocity = rate of motion or
average speed/ time
34. What is the formula for
speed?
Speed = distance/ time
35. What is the formula for
work?
Work = force x distance
36. What is the formula for
power?
Power = work/time
37. True or False: Torque is a
measure of load in pound-feet
or pound-inches.
True.
38. True or False: The
principles of moments is used
to determine the balance of an
aircraft in weight and balance
calculations.
True.
39. True or False: The closer
the force is from the axis, the
greater is the tendency to
rotate the body about its axis.
False: The farther the force
is from the axis…
40. True or False: When
applying two forces in the
same direction but at
different points on a body,
they are parallel forces.
True.
41. True or False: The
tendency to produce rotation
when, for instance, you place
your hand at the end of a
wrench when trying to tighten
or loosen a nut, is a moment
of force or friction.
False: The tendency to
produce rotation when, for
instance, you place your hand
at the end of a wrench when
trying to tighten or loosen a
nut, is a moment of force, or
torque.
42. True or False: In order to
get any work done, energy
must make something move.
False: In order to get any work
done, force must make
something move.
43. True or False: A gasoline
engine and typewriter are
machines, but a hammer,
screwdriver, and ship’s wheel
are not.
False: All are machines
because a machine is any
device that helps you to do
work.
44. True or False: When you
want a machine to run
smoothly and at high
efficiency, you add as much
friction as possible by oiling
and greasing bearings and
honing and smoothing rubbing
surfaces.
False: You eliminate as
much friction as possible.
45. True or False: The amount
of friction depends upon the
nature of the two surfaces and
the forces that bring them
apart.
False: The nature of the two
surfaces and the forces that
hold them together.
46. True or False: A lubricant
reduces frictional resistance
and cuts down on wear.
True.
47. Can a machine be used
for transforming energy,
transferring energy,
multiplying force, multiplying
speed, and changing the
direction of force?
Yes.
48. Why can no machine be
100% efficient?
Because of friction.
49. True or False: Work is
using force to move an object
from one point to another?
True.
50. In the following sentence
what is the word being defined
and what signals that
definition?
Force is any action which
tends to produce, retard, or
modify motion, or change the
shape on an object.
Force, is
51. True or False: Direction is
important to both speed and
velocity.
False: Direction is only
important to velocity.