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borgesalfonso12
21.02.2020 •
Mathematics
A 5 lb bucket containing 10 lb of water is hanging at the end of a 30 ft rope which weighs 1 2 lb/ft. The other end of the rope is attached to a pulley. Assume that the rope is wound onto the pulley at a rate of 3 ft/s causing the bucket to be lifted. Find the work done in winding the rope onto the pulley
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Ответ:
Workdone=10,800 ft/lb
Step-by-step explanation:
10lb of water + 5lb bucket+ (12lb/ft× 30ft)=375lb
Workdone= integral(375 -x) dx
Integrating with upper limit 30 gives
W= [375- x^2/2]
W=375(30) -(30^2)/2
W=11250-450 = 10800ft/lb
Ответ:
Many peoples financial plan is the present, you say you'd like to buy a cheeseburger at lunch. You can afford it so you buy it. Financial goals are set to reach high goals I.E Buying a house, you adapt your financial plan on a day to day basis to reach your financial goals of the future.