The radius of a well is 7m. Water in it is at a depth of 20m and depth of water column is 10m. Work done in pumping out water completely from the well is, (g = 10ms?)
Answers
Answered by
2
Answer:
hope this helped you dear friend
Attachments:
Answered by
2
Total mass of water =m
m= density ×volume
=1000×πR2(h)
=1000×722×72×10
=1540000kg
By using center of mass concept ,center of mass of water is at depth of (20+5)h from the top.
Hence work done =mg(20+5)
=150000×10×25
=385000000J
=385000KJ
Similar questions