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forsale [732]
3 years ago
13

How much work is needed to move a 40 pound box a distance of 2 feet? ????-foot pounds

Mathematics
2 answers:
musickatia [10]3 years ago
8 0

Answer:

108.465joule is your answer

Step-by-step explanation:

mass[m]=40pound=18.144kg

displacement [d]=2feet=0.61m

work done =?

we have

work done =force×displacement

=mass×acceleration due to gravity ×d

=m×a×d

{where [a]=9.8m/s²}

=18.144kg×9.8m/s²×0.61m

=108.465joule

ValentinkaMS [17]3 years ago
5 0
<h3>Answer:</h3>

We know that,

  • <u>1 pound = 4.4N</u>

So, 40pounds = 40 × 4.4 = 176N.

  • <u>1 feet = 1/3.2m</u>

2 feet = 2/3.2 = 0.625m

And <u>W = FS</u>

  • W = 176 × 0.625
  • W = 110J.

<u>Hence, 110J work is needed to move a 40 pound box a distance of 2 feet</u>.

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