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Social Studies, 06.01.2021 08:20 uc22912

Which of the following statements is true? Large wheels need less effort than small wheels to move an object.
A block-and-tackle pulley uses only one pulley.
A screw is made of two wedges joined at the back.
All of the above.

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Which of the following statements is true? Large wheels need less effort than small wheels to move...
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