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(i) Volume = $\frac{mass}{density}$ = $\frac{20}{800}$ = 0.025 m3
(ii) Volume of water = volume of log = 0.025 m3
Upthrust = 0.025 x 1000 x 10 = 250 N
(iii) Tension + weight = upthrust
Tension = 250 - 200 = 50 N
johnmulu answered the question on June 5, 2017 at 08:12
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