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Question

The mechanical advantage of a class II levers is always more than 1, because


A

the effort arm is always longer than the load arm.

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B

the effort arm is always smaller than the load arm.

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C

the effort arm is always equal to the load arm.

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D

there is no load

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Solution

The correct option is A

the effort arm is always longer than the load arm.


In Class II levers, the fulcrum and the effort are at the two ends of the lever and the Load is somewhere in between the effort and the fulcrum.

MA of a lever =Effort armLoad arm

Since, the effort arm is always longer than the load arm .

From the equation above, it is clear that MA of the Class II levers is always greater than 1.


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