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WorksheetsSimple Machine Test Review
Total questions: 47
Worksheet time: 37mins
Name
Class
Date
1.
In which situation is a person doing work on an object?
a)
A school crossing guard raises a stop sign that weighs 10 N.
b)
A student walks while wearing a backpack that weighs 15 N.
c)
A man exerts 350 N of force on a rope attached to a house that does not move.
d)
A worker holds a box 1 m off the floor.
2.
When a simple machine allows you to apply less effort force, what happens to the distance that you apply this force?
a)
It must increase.
b)
It must decrease.
c)
It must stay the same.
d)
It must double.
3.
The ________________ the threads on a screw, the _______________ the length of the inclined plane; so, the work is easier because you use less effort force.
a)
farther, same
b)
closer, smaller
c)
closer, longer
d)
farther, longer
4.
When a screwdriver is used as a first-class lever to open a paint can, what is changed as the work is done?
a)
size of the effort force
b)
size and direction of the effort force
c)
direction of the effort force
d)
power
5.
Analyze the following statement and determine whether or not it is true:
When you use a simple machine, you do less work. Explain your answer.
When you use a simple machine, you do less work. Explain your answer.
a)
True. Simple machines allow you to do less work.
b)
True. Simple machines allow some of the work to disappear.
c)
False. Simple machines cause you to do more work.
d)
False. Simple machines make work easier by creating a trade-off between force and distance.
6.
Which pulley above has a Mechanical Advantage of 2?
a)
A
b)
B
c)
C
d)
D
7.
Which pulley only changes the direction of the force?
a)
A
b)
B
c)
C
d)
D
8.
What is the Mechanical Advantage of pulley system D?
a)
1
b)
2
c)
3
d)
4
9.
Which of the above pictures represents DOING WORK?
a)
A
b)
B
10.
Which lever above is an example of a wheelbarrow (2nd class lever)? Remember FLE 123
a)
A
b)
B
c)
C
d)
D
11.
Which lever above represents a baseball bat (3rd class lever)? Remember FLE 123
a)
A
b)
B
c)
C
d)
D
12.
Which 2 levers above have a MECHANICAL ADVANTAGE greater than 1 (you get to use less effort force)?
a)
A and B
b)
A and C
c)
B and C
d)
B and D
13.
Which inclined plane would require the most force to lift the car?
a)
A
b)
B
c)
C
d)
A, B, and C require the same force to lift the car
14.
Which inclined plane would require the car to be pulled the longest distance?
a)
A
b)
B
c)
C
d)
All of the cars would require the same distance
15.
Which inclined plane would require the most WORK to be done?
a)
A
b)
B
c)
C
d)
Work is the same for A, B, and C
16.
With a wheel and axle, when effort is applied to the wheel, the wheel turns a ___________________ distance, but you get to use _____________ effort force.
a)
longer, more
b)
longer, less
c)
less, more
d)
shorter, more
17.
Two simple machines that are part of a pair of scissors are a:
a)
wedge and lever
b)
screw and inclined plane
c)
wheel and axle and lever
d)
pulley and wheel and axle
18.
Three of the following simple machines are part of the same family. Which one does NOT belong?
a)
Lever
b)
Pulley
c)
Wedge
d)
Wheel and axle
19.
Which wedge would make the work the easiest?
a)
A
b)
B
c)
C
20.
Three of the following simple machines are part of the same family. Which one does NOT belong?
a)
Screw
b)
Pulley
c)
Wedge
d)
Inclined Plane
21.
Calculation Question #1a... What is the effort distance (de) shown in the above diagram?
a)
100 N
b)
10 m
c)
5 m
d)
Effort distance (de) is not given
22.
Calculation Question #1b... What is the resistance distance (dr) shown in the above diagram?
a)
100 N
b)
10 m
c)
5 m
d)
Resistance distance (dr) is not given
23.
Calculation Question #1... What is the mechanical advantage of the inclined plane?
a)
10
b)
2 m
c)
10 m
d)
2
24.
Calculation Question #2a... What is the resistance force (Fr) shown in the above diagram?
a)
100 N
b)
10 m
c)
5 m
d)
The resistance force (Fr) is not given
25.
Calculation Question #2b... What is the effort force (Fe) shown in the above diagram?
a)
100 N
b)
10 m
c)
5 m
d)
Effort Force (Fe) is not given
26.
Calculation Question #2... What is the weight (resistance force - Fr) of the block?
a)
200 N
b)
100 N
c)
50 N
d)
1000 N
27.
Calculation Question #3... What is the amount of work input required to move the block along the total length of the inclined plane?
a)
1000 N
b)
10 J
c)
1000 J
d)
10 N
28.
Calculation Question #4... If the weight of the block was 250 N, how much force would it take to lift it the 4 m?
a)
250 N
b)
200 N
c)
100 N
d)
400 N
29.
Calculation Question 5a... What is the resistance force (Fr) shown in the diagram above?
a)
1000 N
b)
Resistance force (Fr) is not given
c)
5 cm
d)
200 N
30.
Calculation Question 5b... What is the effort force (Fe) shown in the diagram above?
a)
1000 N
b)
200 N
c)
5 cm
d)
Effort Force (Fe) is not given
31.
Calculation Question 5c... What formula would you need to use to determine the mechanical advantage of the lever in the diagram above.
a)
MA = de / dr
b)
MA = Fr / Fe
c)
W = Fd
32.
Calculation Question #5... What is the mechanical advantage of the lever in the picture above?
a)
20,000
b)
0.2 N
c)
5
d)
5 N
33.
Calculation Question #6... What is the length of the effort arm of a lever with a mechanical advantage of 6.25 and a resistance arm of 4 meters?
a)
1.56 m
b)
0.64 m
c)
25 m
d)
1.5 m
34.
What is a device that makes work easier by changing the size and/or direction of force?
a)
Simple Machine
b)
Mechanical Advantage
c)
Work Input
d)
Work Output
35.
What is the work done BY a simple machine on an object?
a)
Work Input
b)
Work Output
c)
Simple Machine
d)
Mechanical Advantage
36.
What is the work that you do ON a simple machine on an object?
a)
Work Input
b)
Work Output
c)
Simple Machine
d)
Mechanical Advantage
37.
What is the number of times the simple machine multiplies force?
a)
Mechanical Advantage
b)
Work Input
c)
Effort Force
d)
Work
38.
What force causes work output to be less than work input?
a)
Friction
b)
Not This One!
c)
Do Not choose this one!
d)
Seriously this one isn't right either!
39.
If a barbell weighs 160 N, what other information do you need to have to calculate how much work it takes to lift it?
a)
Effort Force
b)
Distance
c)
Resistance Force
40.
What Simple Machine is shown? Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
41.
A student uses this tool to build a project made from wood. The student uses Part X to remove a nail from the wood. Part X is being used as a
a)
a lever
b)
a screw
c)
an inclined plane
d)
a wheel and axle
42.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
43.
If I lift a 500N object 2m off the ground, am I doing work?
a)
Yes
b)
No
44.
A worker applies an effort force of 20 N to open a window with a resistance force of 500 N. What is the crowbar’s MA?
a)
25
b)
12500
c)
2
d)
24.3
45.
The diagram shows a movable pulley system. When moving a load, this pulley system changes the —
a)
direction of the force.
b)
amount of force needed.
c)
pull of gravity on the load.
d)
overall mass of the rope.
46.
What is the unit for Work?
a)
Meter (m)
b)
Centimeter (cm)
c)
Newton (N)
d)
Joule (J)
47.
How does a single fixed pulley, like the one seen here, help you do work?
a)
changes the direction of the force
b)
increases the amount of applied force
c)
decreases the amount of applied force
d)
allows you to pull the rope a shorter distance
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