Question 5.C-A.61: One end of a rod of mass 10 kg and length 20 m is tied at th...

One end of a rod of mass 10 kg and length 20 m is tied at the bottom of a water tank by means of a rope with 15 m of its length below the surface of water. Determine the tension in the rope. The specific gravity of the rod is 0.5.

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(i) T + mg = (upthrust)

Upthrust = (mass/unit length) × length immersed × \left(\frac{\text { density of liquid }}{\text { density of the body }}\right)

(ii) 49 N

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