How much work does it take to raise a #7 kg # weight #15 m #?

1 Answer
Meave60
Dec 10, 2015

It takes #"1000 J"# of work.

Explanation:

#"Work"="Force" xx "Distance"#

The force in this problem is the weight of the body being raised in Newton's, using the equation #"F"_"weight"=mg"#, where #"g"# is #"9.81 m/s"^2"#.

#"F"_"weight"=7"kg"xx9.81"m/s"^2"=68.67 N"#

I am keeping some guard digits to reduce rounding errors. The final answer will be rounded to one significant figure.

#"Work"=68.6"N"xx15"m"=1000 N*m=1000 "J"#

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