Which of the following is an example of a first-class lever?

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A Wheelbarrow
B Tweezers
C Seesaw
D Fishing rod

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Answer: C. Seesaw

A seesaw has its pivot in the middle, with the effort on one side and the load on the other, so it is a first-class lever. A wheelbarrow is second class, and tweezers and a fishing rod are third-class levers.

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Which of the following is an example of a first-class lever?

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