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Asked Dec 18, 2019
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Which requires more work - lifting a 50-kg sack a vertical distance of 2m or lifting a 25-kg sack a vertical distance of 4m?

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The expression for work done is given by W = Fd [1] The work done in lifting 50kg slack in vertical distance of 2m is given by W = mg x d W = (50kg)(9.8m/s²)×(2m) W = 980 N · m [2] The work done in lifting 50kg slack in vertical distance of 2m is given by W = mg x d W = (25kg)(9.8m/s²)× (4m) W = 980 N · m [3]

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