Final answer:
A nutcracker is an example of a first class lever.
Step-by-step explanation:
An example of a first class lever is a(n) nutcracker. In a first class lever, the fulcrum is located between the effort and the load. The nutcracker operates by exerting an effort on one end, which then causes the load (the nut) to be squeezed between the two arms of the nutcracker. This is a classic example of a first class lever in action.
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