Question: I need help with these three math problems. HW 1 10 fr chain weighs 25 16 and hangs from a ceiling . Find the

I need help with these three math problems.

HW 1 10 fr chain weighs 25 16 and hangs " from a ceiling . Find the work done in lifting the lower end of the chain to the ceiling so that its level with the upper end. Hard part : how far dues each part of the chain move .1 2 A circular swimming pool has diameter 24m, sides So high and water 4 m deep. How much work is required to pump all the water up out of the top . ( Him : the density of water p= 10 00 ky/u' g= 9.8 - /52 ) 1tw 3 The ave of the parabola y = 2x ? between X:0 and x=4 is rotated about the y- axis . The obtained cup. like surface is filled with water . Find the work required to pump the water out from the top, assuming * and ase measured in meters . ( Him: the density water p= 1000 Ky/m' g= 9.8 - /52 )

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