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Which of the following is an example of a wheel and axle? pencil sharpener block and tackle system knife lid on a jar

Which of the following is an example of a wheel and axle? pencil sharpener block and tackle system knife lid on a jar
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Which of the following is an example of a wheel and axle? pencil sharpener block and tackle system knife lid on a jar

User Alexander Taylor
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I'd say Pencil Sharpener even though it's a wheel and axle AND a wedge
User Vyi
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