a man applies force of 120 N to lift a heavy body of weight 80 N by a crowbar of length 1.25m . What is the of the effort arm?
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https://www.meritnation.com/ask-answer/question/of-120-n-to-lift-a-heavy-body-of-weight-80-n-by-a-crowb/machines/6815828
https://www.meritnation.com/ask-answer/question/of-120-n-to-lift-a-heavy-body-of-weight-80-n-by-a-crowb/machines/6815828