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WorksheetsWork and Simple Machines
Total questions: 65
Worksheet time: 3hrs 30mins
Name
Class
Date
1.
If an object is too heavy to move up a ramp, what is the best way to fix the problem?
a)
Increase the slope of the ramp
b)
Increase the elevation of the ramp
c)
Increase the length of the ramp
d)
Increase the friction of the ramp
2.
Simple machines (crow bar, ramp, axe, screw, crane) do which of the following?
a)
Reduce the mass of an object that needs to be moved
b)
Reduce the distance an object needs to be moved
c)
Reduce the amount of time needed to move an object over a distance
d)
Reduce the force needed to move an object over a distance
3.
A fixed pulley does work by
a)
changing the size of the object it is pulling
b)
changing the distance of the object it is moving
c)
changing the direction of the force in relation to the object being moved
4.
What two things make up a pulley?
a)
A wheel and a screw
b)
a wheel and a rope
c)
a wheel and a handle
d)
a wheel and an axle
5.
Which of these is an example of a wheel and axle?
a)
doorknob
b)
hammer
c)
nail
6.
Mechanical Advantage
a)
gives the pulley a change in direction
b)
reduces the effort needed to lift the load
c)
neither
7.
The more wheels the rope travels through,
a)
The more force that is needed to lift the load
b)
the less force is needed to lift the load
c)
the more work has to be done
8.
Which pulley reduces the most force needed to move an object?
a)
single fixed/single moveable (block and tackle)
b)
single fixed
c)
single moveable
9.
Which of these is an inclined plane?
a)
screw driver
b)
seesaw
c)
axe
d)
ramp
10.
Brayden and his father used a ramp to get a dresser into the truck. What did the ramp decrease?
a)
Height lifted
b)
Effort force
c)
Distance moved
d)
Work done
11.
Ramps, a wedge, and a screw are all examples of
a)
levers
b)
pulleys
c)
wheels and axles
d)
inclined plance
12.
A screw makes work easier by
a)
trading distance for force
b)
changing the direction of the force
c)
shortening the distance of the force
13.
Which simple machine is an inclined plane wrapped around a cylinder?
a)
wedge
b)
screw
c)
wheel and axle
d)
lever
14.
Which of the following is an example of a screw?
a)
hammer
b)
spiral staircase
c)
axe
d)
knife
15.
An ax is used to split wood. What type of simple machine is an ax?
a)
wheel and axle
b)
wedge
c)
lever
d)
screw
16.
Can openers, cars, and scissors are all made of more than one simple machine. These are examples of...
a)
electronic machines
b)
simple machines
c)
complex machines
d)
nanotechnology
17.
Look at the illustration. Which pulley system does NOT give a mechanical advantage (does not reduce force)?
a)
A
b)
B
c)
C
d)
D
18.
This tool is used to measure FORCE.
a)
ruler
b)
triple beam balance
c)
spring scale
d)
barometer
19.
The unit of measure for force is
a)
inches
b)
Newtons
c)
pounds
d)
millibars
20.
Name this simple machine.
a)
Lever
b)
Wedge
c)
Pulley
d)
Inclined Plane
21.
Name this simple machine.
a)
Pulley
b)
Wheel and Axle
c)
Inclined Plane
d)
Lever
22.
Name this simple machine.
a)
Wheel and Axle
b)
Lever
c)
Pulley
d)
Wedge
23.
Name this simple machine.
a)
Wheel and Axle
b)
Lever
c)
Pulley
d)
Wedge
24.
Name this simple machine.
a)
Inclined Plane
b)
Lever
c)
Pulley
d)
Wedge
25.
Name this simple machine.
a)
Screw
b)
Lever
c)
Pulley
d)
Wedge
26.
Which choice is an example of a pulley?
a)
Axe
b)
Seesaw
c)
Crane
d)
Tunnel
27.
Which choice is an example of a wedge?
a)
Axe
b)
Seesaw
c)
Crane
d)
Tunnel
28.
Which choice is an example of a screw?
a)
Axe
b)
Seesaw
c)
Bottle Cap
d)
Tunnel
29.
Which choice is an example of a lever?
a)
Axe
b)
Seesaw
c)
Bottle Cap
d)
Tunnel
30.
Which choice is an example of a wheel and axle?
a)
Axe
b)
Seesaw
c)
Bottle Cap
d)
Ferris Wheel
31.
How does a movable pulley make lifting objects easier?
a)
The amount of force needed is doubled
b)
the amount of force needed is increased
c)
the amount of force needed is reduced
d)
the amount of force needed stays the same
32.
Which type of flooring would have less friction and why?
a)
gravel because it is rough
b)
wooden floor because it has less friction
c)
carpet because it has more friction
d)
grass because it's soft
33.
Where should the fulcrum be placed in order for the student to use the LEAST amount of effort possible to move the box?
a)
point A
b)
point B
c)
point C
d)
point D
34.
This is the definition of what?
Pushing or pulling an object to make it move.
Pushing or pulling an object to make it move.
a)
Friction
b)
Work
c)
Acceleration
d)
None of the Above
35.
This occurs when materials rub or touch to slow an object down.
a)
Work
b)
Force
c)
Friction
d)
None of the above
36.
If you use a crowbar to get the lid off of a bucket, what simple machine are you using?
a)
Inclined Plane
b)
Pulley
c)
Wheel and Axle
d)
Lever
37.
Why does it take someone sledding longer to stop on ice than it does on grass?
a)
The ice makes the friction between the sled and the ground greater.
b)
The ice makes the friction between the tires and the ground less.
c)
All of the above
d)
None of the above
38.
Would it be easier to move a box of the same mass up a ramp that was long and gradual or short and steep?
a)
long and gradual
b)
short and steep
39.
Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
40.
Force is a _____ or _______
a)
simple complex
b)
push pull
c)
up down
d)
in out
41.
How much work is produced when 350 N is used to move a car 5 m?
a)
70 J
b)
1750 J
c)
355 J
d)
175 J
42.
What is mechanical advantage?
a)
The advantage a machine has over a bicycle
b)
A measure of how much a simple machine reduces work
c)
A measure of when is the best time to use a simple machine
d)
A measure of the force amplification achieved by using a tool
43.
What is effort (input) force?
a)
the force required by a machine in order to accomplish work (the force you put on the machine)
b)
the force which an effort force must overcome in order to do work on an object via a simple machine.
c)
the force the machine exerts on a object
d)
the output work times the input distance
44.
What is resistance (output) force?
a)
the force required by a machine in order to accomplish work (the force you put on the machine)
b)
the force which an effort force must overcome in order to do work on an object via a simple machine.
c)
the force the machine exerts on a object
d)
the output work times the input distance
45.
What is effort (input) distance?
a)
the force required by a machine in order to accomplish work (the force you put on the machine)
b)
the force which an effort force must overcome in order to do work on an object via a simple machine.
c)
the distance an input force moves a machine
d)
the output work times the input distance
46.
What is resistance (output) distance?
a)
the force required by a machine in order to accomplish work (the force you put on the machine)
b)
the force which an effort force must overcome in order to do work on an object via a simple machine.
c)
the distance an input force moves a machine
d)
the distance through which the output force is exerted
47.
What is the mechanical advantage of this pulley system?
a)
2
b)
3
c)
4
d)
5
48.
Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever?
a)
1
b)
10
c)
100
d)
1000
49.
How does a single fixed puled, 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
50.
Where is the fulcrum found in a 1st class lever
a)
The middle
b)
Between the input and output force
c)
On the left side of the lever
d)
On the right side of the lever
51.
Where is the fulcrum in a 2nd class lever
a)
In between the input and output
b)
On the left side
c)
On the right side
52.
Where is the fulcrum in a 3rd class lever
a)
On the left side
b)
In between the the input and output
c)
On the right side
53.
Flagpole
a)
wedge
b)
pulley
c)
incline plane
d)
wheel and axle
54.
Stairs
a)
wedge
b)
pulley
c)
inclined plane
d)
wheel and axle
55.
Lightbulb
a)
wedge
b)
pulley
c)
incline plane
d)
screw
56.
A fishing pole is an example of a compound machine. What simple machines are used to make up this compound machine?
a)
lever, wheel and axle, pulley
b)
wheel and axle, inclined plane, pulley
c)
wheel and axle, pulley, inclined plane
57.
A machine is a device that____________.
a)
changes either the magnitude or direction of force
b)
always makes lifting objects require more effort
c)
changes only magnitude of the force
d)
Changes only direction of the force
58.
True or False: No machine is 100 % efficient.
a)
True
b)
False
59.
What is the definition for mechanical advantage?
a)
the number of times a machine increases the input force
b)
the number of times a person can lift a weight
c)
how much work is done in a given amount of time
d)
the rate of doing work
60.
To pull a weed out of a garden, you can apply a force of 50 N to the shovel. The shovel applies a force of 600 N to the weed. What is the mechanical advantage of the shovel
a)
8
b)
10
c)
12
d)
15
61.
To pry a nail out of a wall, you can apply a force of 50 N to the hammer. The hammer applies a force of 650 N to the nail. What is the mechanical advantage of the hammer?
a)
13
b)
15
c)
10
d)
12
62.
*To lift a television, you can apply a force of 50 N to a wedge. The wedge applies a force of 480 N to the weed. What is the mechanical advantage of the wedge?
a)
10.3
b)
10.0
c)
9.6
d)
9.3
63.
Fin=223
Fout= ?
MA= 8
Fout= ?
MA= 8
a)
223
b)
22.25
64.
Fin=?
Fout= 65
MA= 5
Fout= 65
MA= 5
a)
13
b)
325
65.
Barbie sits on one end of a see-saw and Ken sits on the other. Barbie goes up in the air and Ken stays down on the ground. In order for Ken to make Barbie move down, he should
a)
stand on the board
b)
push down on the board
c)
move towards the center
d)
move away from the center
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