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Create a bucket by rotating around the `y`-axis the curve `y=5 ln(x-5)` from `y = 0` to `y = 9`. If this bucket contains a liquid with density `900` kg/m3 filled to a height of `7` meters, find the work required to pump the liquid out of this bucket (over the top edge). Use `9.8` m/s2 for gravity.

Work =   Joules