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level: Levers

Questions and Answers List

Question	Answer
A rigid bar or object that moves around a fixed fulcrum with two forces applied to it	Lever
A fixed pivot point usually found in the centre of a joint	Fulcrum
A muscular force that moves the resistance	Effort
The weight/resistance to be moved. For example body weight or an external object	Load
The distance from the load to the fulcrum	Load arm
The distance from the effort to the fulcrum	Effort arm
The fulcrum is between the effort and the resistance/load describes which type of lever? For example a see-saw	First class
The resistance is between the fulcrum and the effort describes which type of lever? For example a wheelbarrow	Second class
The effort is between the resistance/load and the fulcrum describes which type of lever? For example fishing	Third class
When the resistance is close to the fulcrum and the effort is applied far from the fulcrum, a mechanical advantage occurs. True or false?	True
When the load is far from the fulcrum and the effort is applied near the fulcrum, a mechanical disadvantage occurs. True or false?	True
Which class of lever has a mechanical advantage?	Second class
Which type of lever occurs more in the human body?	Third class
The hip joint is which type of lever?	Third class
Frontal plane matches which axis?	Sagittal
Transverse plane matches which axis?	Vertical
Sagittal plane matches which axis?	Frontal