Levers and Inclined Planes
Wheel and Axel, Gears, and Pulleys
Force, Pressure, and Area
Hydraulics and Pneumatics
Combining Systems, Machines and people
100
All levers (class 1, 2 and 3) all contain a...
fulcrum, load, and effort
100
What kind of simple machine is shown here?
Wheel and axel
100
What unit is pressure measured in?
Pascals
100
What kind of fluid does a hydraulic system use?
liquid?
100
what is the name for a simple machine that is a part of a large machine?
subsystem
200
What class of lever is this?
Class 2 lever
200
Is this an example of a fixed pulley or a movable pulley?
Fixed pulley
200
What is pascals law?
pressure input = pressure output
200
What is an example of a pneumatic system?
jackhammer, staple guns, high-speed drill, sandblasters, air cast, etc
200
What invention in the late eighteenth century was an important milestone in the history if science and technology?
the steam engine
300
What unit is Work measured in?
Joules
300
When you are riding a bike, your mechanical advantage is ____ (less than one/greater than one) but your speed ratio is _____ (less than one/greater than one)
less than one, greater than one
300
what is a closed system?
a self contained collection of parts
300
Your circulatory system (blood vessels, heart, capillares) are example of what kind of system?
Hydraulic system
300
What was the name of the period of time that is known to be when lots of machines were being invented and brought many people to large cities for mass production?
The industrial revolution
400
You apply an effort force of 500N to the lever, and the car you are lifting weighs 2500N of force. What is the mechanical advantage of the lever?
MA = 5
400
What is the speed ratio of this gear system?
SR = 3
400
You are jumping on a trampoline. You weigh 380N and your feet have a total are 0.05m2, what pressure are you exerting on the trampoline?
7600 Pa
400
what is the name of the moveable part that controls the flow of a fluid by opening or closing and controlling the flow of the fluid in one direction?
a valve
400
*DAILY DOUBLE*
name the three simple machines we learned about in class that are in this image
*DAILY DOUBLE*
Lever, hydraulics and a wheel and axel
500
A hockey stick is an example of what type of lever?
class 3 lever
500
What is the mechanical advantage of this compound pulley?
5
500
Suppose you exert a force of 250N on piston A with an area of 50cm2, what is the the pressure you are exerting on the piston?
500 Pa
500
*DAILY DOUBLE*
On Piston A you exert 200N of pressure over an area of 2m2, the area of Piston B is 5m2. What is the mechanical advantage of this hydraulic system?
*DAILY DOUBLE*
MA = 2.5
(Force output = 500N)
500
Spacecrafts use what kind of engine in order to take off and go to space despite how heavy they are?
Internal combustion engine