Question |
Answer |
What is a Spring Scale? |
A simple device used to measure Newtons. |
Define Effort. |
The force needed to move a load or overcome resistance (student). |
Explain Newton. |
It is the unit used to measure effort. |
What is a lever arm? |
The stick or beam free to pivot at a point (board that Mrs. Boston stood on). |
Define Fulcrum. |
The point where the lever arm pivots (4 X 4 under the board). |
What is the load? |
The mass lifted or the resistance overcome by the lever (Mrs. Boston). |
What does a lever do? |
It is a simple machine used to make life easier. |
Define Advantage. |
It is the benefit gained by using levers or other simple machines. |
What does 'N' stand for? |
It is an abbreviation for Newton. |
Describe a First class lever. |
It has the fulcrum in the middle and the load and effort on the ends. |
Describe a Second class lever. |
It has the load in the middle and the effort and fulcrum on the ends. |
Describe a Third class lever. |
It has the effort in the middle and the load and fulcrum on the ends. |
You make the effort easiier by……… |
Moving the lad closer to the fulcrum. |
Levers can be set up in how many ways? |
They can be set up in three basic ways – Class 1, Class 2, and Class 3. |