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
