A rescue cable attached to a
helicopter′s weighs 2 lb/ft.
A man 180−lb grabs the end
of the rope and his pulled
from the ocean into the helicopter.
How much work is done in
lifting the man if the helicopter
is 40 ft above the water ?
(a) 8800 lb−ft
(b) 1780 lb−ft
(c) 7280 lb−ft
(d) 10,400 lb−ft
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