Physics, 16.12.2020 17:10, 3steves

With your left hand grasp something with weight such as a heavy textbook or pencil pouch and hold it at your side. Place your right hand on your upper left arm so that you can feel your muscles move. Slowly bend your left arm to raise the weight. Then slowly straighten your left arm to lower it. Repeat this motion a few times until you can feel and see what is happening. 17. What joint did you use to lift the weight

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With your left hand grasp something with weight such as a heavy textbook or pencil pouch and hold it...