Levers
Pulleys
Wheel and Axle
Incline Planes
Screws
100
How many groups of levers are there
There are 3 groups of levers
100
How many kinds of pulleys are there?
There are three types of pulleys.
100
If the wheel has a diameter of 42 and the axle has a diameter of 7, what is the mechanical advantage
6
100
What is the inclined plane used for?
spreading out the work
100
What is the advantage of a screw having more threads?
less effort is required.
200
FEL represents what type of lever
Fulcrum, Effort, and Load. The third type of lever
200
What is the name of all three of the pulleys?
Fixed, Movable, and Block and table.
200
If a wheel has a diameter 25, and the axle has a diameter of 5, what is the mechanical advantage.
5
200
How do you find the mechanical advantage of an inclined plane
Mechanical advantage = length / height or mechanical advantage = Base/Height
200
What type of simple machine is used to make a screw?
Incline plane
300
Whats the formula for the mechanical advantage of a lever?
Mechanical Advantage = Effort arm length / Load arm length
300
Which of the three types of pulleys has a mechanical advantage of 1?
Fixed pulley
300
How do you find the mechanical advantage for wheels and axle?
Mechanical advantage = diameter of the wheel / diameter of axle
300
List an example of an inclined plane
Ramps, staircases, Etc.
300
What is a disadvantage to having a screw with more threads?
It takes more time, because it requires you to turn the screw more times.
400
What class of lever would a Nutcracker be?
A Second class lever
400
What is the mechanical advantage of a movable pulley
2
400
If you put the effort on the axle, what is the mechanical advantage?
Always below 1
400
If the base of an inclined plane is 51 inches, and it is 17 inches tall. What is the mechanical advantage.
The mechanical advantage would be 3
400
What type of screw only has one thread?
A nail!
500
Draw a diagram of a second class lever.
Your picture should be somewhat similar to this:
500
What is the other name for a block and tackle pulley
Compound
500
If you put the effort on the wheel, what is the mechanical advantage?
Always above 1
500
If the base of an inclined plane is 144, and the length is 6, what is the mechanical advantage?
The mechanical advantage would be 24
500
What is the name of the space between the threads?
The pitch.