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| Many parts of your body are like simple machines. The arms and legs are like levers. When you lift something with your hand, you lift the load, your muscle is the effort and the joint - either the wrist or elbow is the fulcrum. | |||||
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| Many parts of your body are like simple machines. The arms and legs are like levers. When you lift something with your hand, you lift the load, your muscle is the effort and the joint - either the wrist or elbow is the fulcrum. | |||||
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