Advertisements
Advertisements
Question
State three differences between the three classes of levers.
Advertisements
Solution
| Class I | Class II | Class III | |
| 1. | It has the fulcrum between the load and effort. | It has the load between the fulcrum and effort. | It has an effort between the fulcrum and the load. |
| 2. | The effort arm can be shorter, equal to or longer than the load arm. | The effort arm is bigger than the load arm. | The effort arm is always shorter than the load arm. |
| 3. | The mechanical advantage can be less than, equal to, or greater than 1. | The mechanical advantages are always greater than 1. | The mechanical advantages are always less than 1. |
| 4. | The load and effort are in the same direction. | The load and effort are in opposite directions. | The load and effort are in opposite directions. |
APPEARS IN
RELATED QUESTIONS
Describe three orders of levers giving an example of each. Draw neat diagrams showing the positions of fulcrum, load, and effort in each kind of lever.
Which class of lever has the mechanical advantage always more than 1? Give an example.
Give one example of a class I lever where the mechanical advantage is more than 1.
Give one example of a class I lever in a case where the mechanical advantage is less than 1?
Name the class to which the following lever belong:
a wheelbarrow
Name the class to which the following lever belong:
a crowbar
Give one example of a class I lever where mechanical advantage is less than 1.
Explain why the mechanical advantage of the class III type of lever is always less than 1.
Classify the following into levers:
A door
Name the load, effort, and fulcrum.
 |
 |
 |
|
1. ______ 2. ______ 3. ______ |
1. ______ 2. ______ 3. ______ |
1. ______ 2. ______ 3. ______ |
