A cylindrical copper object occupying a volume of 68cm³ is suspended from a cord, as illustrated in the figure. The object is submerged in a fluid (petrol) with a density of 730 kg/m³. Determine the tension in the cord.

• A. 3.36 N
• B. 4.28 N
• C. 6.65 N
• D. 5.49 N

Answer: (D)