Estimate how many times must he lift the barbell

Reference no: EM13565799

A man drinks a bottle of beer and proposes to work off its460kj by exercising with 20 kg barbell. If each lift of thebarbell from chest to over his head is through 60 cm and theefficiency of his body is 10 percent, how many times must he lift the barbell?

Reference no: EM13565799

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