A cylinder wooden float whose base area S=4000cm^(2) & the altitude H=50cm drifts on the water surface specific weight of wood d=0.8gf//cm^(3) (i). What work must be performed to take the float out of the water? (ii). Compoute the work to be performed to submerged completely the float into the water.

A cylinder wooden float whose base area S=4000cm^(2) & the altitude H=

1.	A cylinder wooden float whose base area S=4000cm^(2) & the altitude H=50cm drifts on the water surface specific weight of wood d=0.8gf//cm^(3) (i). What work must be performed to take the float out of the water? (ii). Compoute the work to be performed to submerged completely the float into the water.
Answer» ANSWER :(i). `(d^(2)H^(2)S)/(2rhog)=32kgf-m` (II). `(1)/(2)SH^(2)(1-d^(2))=2Kgf-m`