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Mia Kim——Studied at University of California, Berkeley, Lives in Berkeley, CA
A shovel is actually a compound machine (a combination of multiple simple machines). It is composed of a wedge and a lever. ... The resistance is the dirt on the head of the shovel, the hand closer to the end of the handle is the fulcrum, and the hand near the center is the effort. In this way, a shovel is a class 3 lever.read more >>+119962023-04-29 00:06:13
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