Simple machines (levers) Flashcards
1
Q
How many of the simple machines and what are those?
A
(7)
1. levers
2. Wheels
3. axles
4. pulleys
5. inclines planes
6. wedges
7. screws
2
Q
beam or rigid object that turns about a fixed pivot or fulcrum.
A
A levers
3
Q
What is the use of the “Levers”
A
used to lift or move heavy objects.
4
Q
3 components in the levers
A
-Fulcrum (F)
-Load or resistance (W)
- an Effort (E)
5
Q
What are the 3 groups of “Levers”
A
- first-class levers – save labor and facilitate work reducing effort
- seconds class levers –save labor reducing effort
- Third-class levers–facilitate work
6
Q
Example of first-class levers?
A
Scissors,
pilers,
see-saws
claw hammers.
7
Q
Example of second-class levers?
A
wheelbarrows.
nutcrackers.
bottle opener
8
Q
Example of third-class levers?
A
chopstick
tweezers
staplers
brooms
shovels
