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A weightlifter holds a 1 , 1 0 0 N barbell 1 meter above the ground. One end of a 2 - meter - long

A weightlifter holds a 1,100 N barbell 1 meter above the ground. One end of a 2-meter-long chain hangs from the center of the barbell. The chain has a total weight of 800 N. How much work (in 3) is required to lift the barbell to a height of 2 m?
What is the average force (average with respect to height of the barbell from the ground) exerted by the weightlifter in the process?

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