Question

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

Answer 1

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

Answer 2

Answer:

We know that,

• 1 pound = 4.4N

So, 40pounds = 40 × 4.4 = 176N.

• 1 feet = 1/3.2m

2 feet = 2/3.2 = 0.625m

And W = FS

• W = 176 × 0.625
• W = 110J.

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