Levers Flashcards
1
Q
What does a lever consist of
A
- a pivot
- an effort
- a load
2
Q
What is a pivot
A
- A point around which something can rotate or turn.
3
Q
What is effort
A
- Force used to move a load over a distance
4
Q
What is a load
A
- The overall force that is exerted, usually by a mass or object, on a surface.
5
Q
Class one lever
A
- effort - pivot - load
6
Q
Examples of class one levers
A
- see-saw
- crowbar
- scissors
7
Q
class two levers
A
- pivot - load - effort
8
Q
Class 2 lever examples
A
- wheelbarrow
- nutcracker
9
Q
Class 3 levers
A
- pivot - effort - load
10
Q
Class 3 lever examples
A
- tweezers
- cooking tongs
- Fishing rod
11
Q
How to make a lever easier to use
A
- The longer the lever
- and the further the effort acts from the pivot
- the greater the force on the load will be.
