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. |