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Figure 13 shows a log of wood of mass 20kg submerged in water in a pond and held in position by string fixed to the bottom of the pond.
Given that the density of water is 1000#kgm^-3# and that of wood is 800#kgm^-3#, determine the;
(i) Volume of the log
(ii) Upthrust of the log
(iii) Tension in the string