A cube wood block with density of 0.6 × 103kg / m3 and edge length of 10cm was pulled by a rope and immersed in water to calculate the tensile force on the wood block

The gravity of wood block is 0.6 × 10 & # 179; kg / M & # 179; × 1000cm & # 179; × 10N / kg = 6N
The buoyancy of wood block is 1.0 × 10 & # 179; kg / M & # 179; × 1000cm & # 179; × 10N / kg = 10N
Therefore, the tension of the rope on the block is 10-6 = 4N, downward

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