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Question
Which type of lever has a mechanical advantage always more than one? Give one example. What change can be made in this lever to increase its mechanical advantage?
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Solution
The mechanical advantage of Class II levers is always greater than one. This is because the load and effort are on the same side of the fulcrum but in different directions, and the effort arm is always greater than the load arm. Therefore, the mechanical advantage is always bigger than one.
Example: a nutcracker.
We can increase the length of the effort arm to increase its mechanical advantage.
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