A 3-lb bucket containing 20- lb of water is hanging at the endof a 20-ft rope that weights 4 -oz / ft. The other end of the ropeis aattached to a puley. How mauch work is required to wind thelenght of the rope onto the pulley, assuming that the rope iswound onto the pulley at a rate of 2- ft/s and that as the bucketis being lifted, water leaks from the bucket at a rate of 0.5 -lb/s?

Answer 1

340