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4. [016 Points] DETAILS PREVIOUS ANSWERS MY NOTES A weightlifter holds a 1,000 N barbell 1 meter above the ground. One end of a Zimeterilong

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4. [016 Points] DETAILS PREVIOUS ANSWERS MY NOTES A weightlifter holds a 1,000 N barbell 1 meter above the ground. One end of a Zimeterilong chain hangs from the center of the barbell. The chain has a total weight of 700 N. How much work (in J) is required to lift the barbell to a height of 2 m? 1650 x J What is the average force (average with respect to height of the barbell from the ground) exerted by the weightlifter in the process? 1650 x N

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