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..1 Sprint 11:21 AM @. * 92% webwork.uoregon.edu WeBWorK MATHEMATICAL ASSOCIATION OF AMERICA Logged in as gbjellos. Log Out G >webwork/math252-24251/week7 14 Week7: Problem 14 Previous Problem List Next (1 point) An anchor weighing 120 lb in water is attached to a chain weighing 5 lb/ft in water. Find the work done to haul the anchor and chain to the surface of the water from a depth of 40 ft. (include units) work = 12400 lb Preview My Answers Submit Answers You have attempted this problem 9 times. Your overall recorded score is 096.Explanation / Answer
Q14.
Weight of chain: 5 lb/ft * 40 ft = 200 lb
Since W= Fd and F=ma
F =ma= (200 lb + 120 lb)(32.2 ft/s^2) = 10304 lb
W=Fd= (10304lb)(40 ft) = 412160 ft-lb
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