NURSING EXAM QUESTIONS
HUMAN ANATOMY PHYSIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
First Class
|
|
|
Second Class
|
|
|
Third Class
|
|
|
None of the above
|
Detailed explanation-1: -First-class levers have a fulcrum (pivot) in the middle.
Detailed explanation-2: -In a first class lever, the fulcrum is located between the load and the effort. If the fulcrum is closer to the load, then less effort is needed to move the load a shorter distance. If the fulcrum is closer to the effort, then more effort is needed to move the load a greater distance.
Detailed explanation-3: –First class levers have the fulcrum in the middle.-Second class levers have the load in the middle.-This means a large load can be moved with relatively low effort.-Third class levers have the effort in the middle.
Detailed explanation-4: -Class-1 levers have the fulcrum in the middle, and the applied force is up or down on one of the ends, with the output force being in the opposite direction on the other end. Examples of class-1 levers include seesaws and scissors. These can be either force multiplying or distance multiplying.