Levers Flashcards
1
Q
What are levers made out of ?
A
A bar and a pivot, called a fulcrum
With three main parts the
- Effort
- Fulcrum
- Load
2
Q
What is the effort ?
A
The amount of force applied by the user/ the input
3
Q
What is the fulcrum ?
A
Where the lever pivots
4
Q
What is the load ?
A
The weight that needs to be moved/ the output
5
Q
What is the triangle for calculation ?
A
Mechanical advantage= load over effort
6
Q
Work out the mechanical advantage for a load of 200 and an effort of 100?
A
Mechanical advantage= load over effort
200 divided by 100 which is 2
This can also be written as 2:1
7
Q
How do we work out mechanical advantage for a distance between load and fulcrum of 2m and a distance between effort and fulcrum of 6m ?
A
6 divided by 2 which is 3
So
3:1 meaning it’s three times easier to lift
