WorksheetsSimple Machines Review
Total questions: 68
Worksheet time: 1hrs 3mins
Name
Class
Date
1.
What is the term for the distance between threads on a screw?
a)
Gaps
b)
Pitch
c)
Ridge
d)
Shank
2.
What is an example of a second class lever ?
a)
Stapler
b)
Broom
c)
Scissors
d)
Crowbar
3.
What force produces rotation?
a)
Static equilibrium
b)
Torque
c)
Speed
d)
Friction
4.
If one simple machine is used after another its called....
a)
Compound Machine
b)
Pulley system
c)
Lever System
d)
Compound system
5.
What is the equation for moment
a)
M=MA
b)
M=FD
c)
M=DR
d)
M=DF
6.
What is the IMA of a fixed pulley?
a)
1
b)
2
c)
3
d)
4
7.
What is the IMA of a movable pulley?
a)
4
b)
16
c)
32
d)
2
8.
What is the formula for work?
a)
Force times distance
b)
Distance times mass
c)
Mass times acceleration
d)
Distance times acceleration
9.
Efficiency can never be under 100.
a)
true
b)
false
c)
I don't know
d)
Go Cowboys
10.
What kind of lever is a baseball
a)
1st class
b)
2nd class
c)
3rd class
d)
4th class
11.
You are given an inclined plane with the length you must push the load being 15ft and the height of the inclined plane traveled by resistance being 4ft tall. Calculate the IMA.
a)
3.8:1
b)
1
c)
6.2:1
d)
2.8:1
12.
This screw Rashad gave you has a label on the screw (1/8 16NC). What is the pitch?
a)
43473
b)
43481
c)
43489
d)
43475
13.
What class of lever is this?
a)
First Class
b)
Second Class
c)
Third Class
14.
Two children are playing on a seesaw. Child 1 is applying 60lb of force on one side while Child 2 is resisting with 60lb of force. What is the AMA?
a)
0.042361111111111106
b)
2.5006944444444446
c)
0.8340277777777777
d)
12.6:1
15.
You are using 20lb to push 31lb box up a inclined plane. The inclined plane is 15ft long and the height is 6ft. Calculate the efficiency.
a)
0.12
b)
0.61
c)
0.39
d)
0.62
16.
How many types of levers are they?
a)
5
b)
4
c)
3
d)
None of the Above
17.
What is the Efficiency of a lever with 800 IMA and 600 AMA ?
a)
1
b)
0.26
c)
75
d)
0.75
18.
Which One Is Not A Lever ?
a)
First Class
b)
2nd Class
c)
3rd Class
d)
4th Class
19.
How Do You Calculate IMA ?
a)
Fe/Fr
b)
De/Dr
c)
Dr/De
d)
Dez Nuts
20.
Whats the formula for work ?
a)
Force * Distance
b)
D*T
c)
d*t
d)
All Of The Above
21.
What defines a second class lever?
a)
The resistance force and effort force are the same distance from the fulcrum.
b)
The resistance force is closer to the fulcrum than the effort force.
c)
The effort force is closer to the fulcrum than the resistance.
22.
What defines a 1st last lever?
a)
The effort force and resistance force are the same distance from the fulcrum.
b)
The effort force is further from the fulcrum while the resistance force is closer to the fulcrum.
c)
The resistance force is further from the fulcrum than the effort force.
23.
What defines a third class lever.=
a)
The effort and resistance force are the same distance from the fulcrum
b)
The effort force is further from the fulcrum than the resistance force.
c)
The resistance force is closer to the fulcrum than the effort force.
24.
The MA of a second class lever can is greater than one.
a)
true
b)
false
25.
A third class lever is greater than one.
a)
true
b)
false
26.
What two variables determine the mechanical advantage of a simple machine?
a)
speed and force
b)
force and distance
c)
acceleration and power
d)
What is this?
27.
The ratio of the work output to the work input of a machine is
a)
Davidson is not teaching us
b)
Efficiency
c)
I don't pay attention
d)
Mechanical Advantage
28.
What class is a wheel barrel?
a)
Third Clasas
b)
Fourth Class
c)
First Class
d)
Second class
29.
What is the AMA of 200/250
a)
0.2
b)
0.34
c)
0.8
d)
0.54
30.
If you can use a screwdriver to open a can of paint, what is the screwdriver being used as?
a)
Wheel and axle
b)
Screw
c)
Inclined plane
d)
Lever
31.
It is easier to push a piano up a ramp than lifting the piano.
a)
true
b)
false
32.
What is the mechanical Advantage of a Double Pulley??
a)
3 to 1
b)
Mr. Davidson didn't teach use this
c)
increases the amount of applied force
d)
2 to 1
33.
How does a single fixed pulley work?
a)
It changes the direction of the force that is applied.
b)
increases the amount of applied force.
c)
lowers the amount of force that is applied.
d)
makes things better for you
34.
Davidson is lifting a car that weighs 10,000 Pounds off the ground with 1,000 pounds of force. What's Davidson's mechanical advantage ??
a)
3,000 : 1
b)
100
c)
0.4173611111111111
d)
1
35.
You used a screwdriver to pop off the lid off of a bucket. What kind of simple machine did you use??
a)
pulley
b)
lever
c)
Magic!!
d)
Wheel and Axle.
36.
The efficiency of a simple machine
a)
is always greater than 100%
b)
is always less than 100%
c)
equal to 100%
d)
just 50%
37.
Whats a difference between a fixed and movable pulley
a)
Both are movable, though they have different colors
b)
The fixed pulley is stagnant and the movable pulley moves when it is pulled.
c)
One is hanged up top and the other is pulled on the bottom
d)
They both have different weights and forces.
38.
What is an example of a second class lever
a)
Wind turbine
b)
Baseball bat
c)
A bar of Steel
d)
A crane
39.
What type of lever is a third class lever
a)
A baseball bat
b)
A incline plane
c)
A pulley
d)
Wind turbine
40.
What units are used to travel the distance a car make
a)
ft x lbs
b)
in x lbs
c)
cm x lbs
d)
m x lbs
41.
What was the main the one material that was use for support was...
a)
L-channel
b)
axle
c)
Screw
d)
Barron
42.
What does Ideal mechanical advantage not take into account
a)
air drag
b)
friction
c)
newton's laws
d)
solar dragging effect
43.
calculation for moment
a)
Fr/Fe
b)
Fe/Fr
c)
Both
44.
Is this a movable or fixed pulley
a)
movable
b)
fixed
c)
compound pulley
45.
Farrell makes a catapult for his project, the catapult has a effort of 25 lb and a resistance of 5 lb what is the AMA of the catapult
a)
the catapult is to short
b)
0.2
46.
In a fixed pulley the forces are ....
a)
constant
b)
canceled out
c)
collide
47.
How do you find efficiency?
a)
IMA/AMA
b)
De/Dr
c)
AMA/IMA
d)
I stopped listening halfway through class
48.
What else can work be known as?
a)
Efficiency
b)
Moment
c)
Ideal Mechanical Advantage
d)
Weight
49.
If an Isaac has a IMA of 3.8 and Farrell has a AMA of 2.5. What is there efficiency?
a)
0.21
b)
0.06
c)
0.09
d)
0.66
50.
What is a wedge?
a)
Double-Inclined Plane
b)
Inclined Plane
c)
Lever
d)
Axe
51.
If Isaac weighs 136 Ib and I lift him up with 4 Ib of Force, what is the AMA?
a)
69
b)
36
c)
0.029
d)
34
52.
What type of lever is this?
a)
1st class
b)
2nd class
c)
Third class
d)
It is not a lever
53.
What is the formula for the IMA of screws?
a)
Circumference/Pitch
b)
Pitch/Circumference
c)
Diameter/Circumference
d)
None of the above
54.
What is the IMA of a movable pulley
a)
1
b)
2
c)
3
d)
4
55.
AMA is always LARGER than the IMA.
a)
true
b)
false
56.
What type of lever is a windmill?
a)
1st class
b)
2nd class
c)
3rd class
57.
What type of lever are tweezers?
a)
1st
b)
2nd
c)
3rd
d)
it's not a lever
58.
actual mechanical advantage formula is?
a)
Fe/Fr
b)
Dr/De
c)
Fr/Fe
d)
De/Dr
59.
What does MA stand for?
a)
mechanical advantage
b)
Mechanical average
c)
Mechanical atypical
60.
what is an example of a class 1 lever??
a)
stapler
b)
while and berral
c)
bat
d)
scissors
61.
ideal mechanical advantage is the expected mechanical advantage produced by a simple machine.
a)
true
b)
false
62.
What class lever is this
a)
3rd class
b)
1st class
c)
2nd class
d)
4th class
63.
what are 3 examples of a 2 class lever ?
a)
tweezers,shovels, fishing rods
b)
pair of pliers,Wheelbarrow,Broom
c)
Crowbar,Scissors,Mousetrap
d)
Wheelbarrow ,Crowbar, Nut cracker
64.
What is the formula to find the AMA of a lever?
a)
Distance Effort/Distance Resistance
b)
Force Resistance/ Force Effort
c)
Mass/Acceleration
65.
How do you find the moment?
a)
moment equals mass times acceleration
b)
moment is when everything is 0
c)
moment is when there is no mass
d)
moment equals distance times force
66.
What is the IMA of a fixed pulley?
a)
2
b)
It varies
c)
1
d)
the same as the AMA
67.
What kind of lever is this?
a)
second class
b)
first class
c)
third class
d)
its not a lever it's an inclined plane
68.
What are the two components of a screw?
a)
path and pitch
b)
thread and diameter
c)
right and left
d)
circumference and distance
100 %
